pidgin: util.h File Reference

pidgin 2.14.4

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Data Structures | Typedefs | Functions
util.h File Reference
libpurple

Utility Functions. More...

`#include <stdio.h>`
`#include "account.h"`
`#include "signals.h"`
`#include "xmlnode.h"`
`#include "notify.h"`

Go to the source code of this file.

## Data Structures
struct | _PurpleMenuAction
struct | _PurpleKeyValuePair
| A key-value pair. More...

## Typedefs
typedef struct _PurpleUtilFetchUrlData | PurpleUtilFetchUrlData
| An opaque structure representing a URL request.
typedef struct _PurpleMenuAction | PurpleMenuAction
typedef struct _PurpleKeyValuePair | PurpleKeyValuePair
| A key-value pair.
typedef char *(* | PurpleInfoFieldFormatCallback) (const char *field, size_t len)

## Functions
PurpleMenuAction * | purple_menu_action_new (const char *label, PurpleCallback callback, gpointer data, GList *children)
| Creates a new PurpleMenuAction.
void | purple_menu_action_free (PurpleMenuAction *act)
| Frees a PurpleMenuAction.
void | purple_util_set_current_song (const char *title, const char *artist, const char *album)
| Set the appropriate presence values for the currently playing song.
char * | purple_util_format_song_info (const char *title, const char *artist, const char *album, gpointer unused)
| Format song information.
Utility Subsystem <br>
void | purple_util_init (void)
| Initializes the utility subsystem.
void | purple_util_uninit (void)
| Uninitializes the util subsystem.
Base16 Functions <br>
gchar * | purple_base16_encode (const guchar *data, gsize len)
| Converts a chunk of binary data to its base-16 equivalent.
guchar * | purple_base16_decode (const char *str, gsize *ret_len)
| Converts an ASCII string of base-16 encoded data to the binary equivalent.
gchar * | purple_base16_encode_chunked (const guchar *data, gsize len)
| Converts a chunk of binary data to a chunked base-16 representation (handy for key fingerprints)
Base64 Functions <br>
gchar * | purple_base64_encode (const guchar *data, gsize len)
| Converts a chunk of binary data to its base-64 equivalent.
guchar * | purple_base64_decode (const char *str, gsize *ret_len)
| Converts an ASCII string of base-64 encoded data to the binary equivalent.
Quoted Printable Functions <br>
guchar * | purple_quotedp_decode (const char *str, gsize *ret_len)
| Converts a quoted printable string back to its readable equivalent.
MIME Functions <br>
char * | purple_mime_decode_field (const char *str)
| Converts a MIME header field string back to its readable equivalent according to RFC 2047.
Markup Functions <br>
gchar * | purple_markup_escape_text (const gchar *text, gssize length)
| Escapes special characters in a plain-text string so they display correctly as HTML.
gboolean | purple_markup_find_tag (const char *needle, const char *haystack, const char **start, const char **end, GData **attributes)
| Finds an HTML tag matching the given name.
gboolean | purple_markup_extract_info_field (const char *str, int len, PurpleNotifyUserInfo *user_info, const char *start_token, int skip, const char *end_token, char check_value, const char *no_value_token, const char *display_name, gboolean is_link, const char *link_prefix, PurpleInfoFieldFormatCallback format_cb)
| Extracts a field of data from HTML.
void | purple_markup_html_to_xhtml (const char *html, char **dest_xhtml, char **dest_plain)
| Converts HTML markup to XHTML.
char * | purple_markup_strip_html (const char *str)
| Strips HTML tags from a string.
char * | purple_markup_linkify (const char *str)
| Adds the necessary HTML code to turn URIs into HTML links in a string.
char * | purple_unescape_text (const char *text)
| Unescapes HTML entities to their literal characters in the text.
char * | purple_unescape_html (const char *html)
| Unescapes HTML entities to their literal characters and converts "<br>" to "\n".
char * | purple_markup_slice (const char *str, guint x, guint y)
| Returns a newly allocated substring of the HTML UTF-8 string "str".
char * | purple_markup_get_tag_name (const char *tag)
| Returns a newly allocated string containing the name of the tag located at "tag".
const char * | purple_markup_unescape_entity (const char *text, int *length)
| Returns a constant string of the character representation of the HTML entity pointed to by text.
char * | purple_markup_get_css_property (const gchar *style, const gchar *opt)
| Returns a newly allocated string containing the value of the CSS property specified in opt.
gboolean | purple_markup_is_rtl (const char *html)
| Check if the given HTML contains RTL text.
Path/Filename Functions <br>
const gchar * | purple_home_dir (void)
| Returns the user's home directory.
const char * | purple_user_dir (void)
| Returns the purple settings directory in the user's home directory.
void | purple_util_set_user_dir (const char *dir)
| Define a custom purple settings directory, overriding the default (user's home directory/.purple)
int | purple_build_dir (const char *path, int mode)
| Builds a complete path from the root, making any directories along the path which do not already exist.
gboolean | purple_util_write_data_to_file (const char *filename, const char *data, gssize size)
| Write a string of data to a file of the given name in the Purple user directory ($HOME/.purple by default).
gboolean | purple_util_write_data_to_file_absolute (const char *filename_full, const char *data, gssize size)
| Write data to a file using the absolute path.
xmlnode * | purple_util_read_xml_from_file (const char *filename, const char *description)
| Read the contents of a given file and parse the results into an xmlnode tree structure.
FILE * | purple_mkstemp (char **path, gboolean binary)
| Creates a temporary file and returns a file pointer to it.
const char * | purple_util_get_image_extension (gconstpointer data, size_t len)
| Returns an extension corresponding to the image data's file type.
char * | purple_util_get_image_checksum (gconstpointer image_data, size_t image_len)
| Returns a SHA-1 hash string of the data passed in.
char * | purple_util_get_image_filename (gconstpointer image_data, size_t image_len)
Environment Detection Functions <br>
gboolean | purple_program_is_valid (const char *program)
| Checks if the given program name is valid and executable.
gboolean | purple_running_gnome (void)
| Check if running GNOME.
gboolean | purple_running_kde (void)
| Check if running KDE.
gboolean | purple_running_osx (void)
| Check if running OS X.
char * | purple_fd_get_ip (int fd)
| Returns the IP address from a socket file descriptor.
int | purple_socket_get_family (int fd)
| Returns the address family of a socket.
gboolean | purple_socket_speaks_ipv4 (int fd)
| Returns TRUE if a socket is capable of speaking IPv4.
String Functions <br>
gboolean | purple_strequal (const gchar *left, const gchar *right)
| Tests two strings for equality.
const char * | purple_normalize (const PurpleAccount *account, const char *str)
| Normalizes a string, so that it is suitable for comparison.
const char * | purple_normalize_nocase (const PurpleAccount *account, const char *str)
| Normalizes a string, so that it is suitable for comparison.
gboolean | purple_str_has_prefix (const char *s, const char *p)
| Compares two strings to see if the first contains the second as a proper prefix.
gboolean | purple_str_has_suffix (const char *s, const char *x)
| Compares two strings to see if the second is a proper suffix of the first.
gchar * | purple_strdup_withhtml (const gchar *src)
| Duplicates a string and replaces all newline characters from the source string with HTML linebreaks.
char * | purple_str_add_cr (const char *str)
| Ensures that all linefeeds have a matching carriage return.
void | purple_str_strip_char (char *str, char thechar)
| Strips all instances of the given character from the given string.
void | purple_util_chrreplace (char *string, char delimiter, char replacement)
| Given a string, this replaces all instances of one character with another.
gchar * | purple_strreplace (const char *string, const char *delimiter, const char *replacement)
| Given a string, this replaces one substring with another and returns a newly allocated string.
char * | purple_utf8_ncr_encode (const char *in)
| Given a string, this replaces any utf-8 substrings in that string with the corresponding numerical character reference, and returns a newly allocated string.
char * | purple_utf8_ncr_decode (const char *in)
| Given a string, this replaces any numerical character references in that string with the corresponding actual utf-8 substrings, and returns a newly allocated string.
gchar * | purple_strcasereplace (const char *string, const char *delimiter, const char *replacement)
| Given a string, this replaces one substring with another ignoring case and returns a newly allocated string.
const char * | purple_strcasestr (const char *haystack, const char *needle)
| This is like strstr, except that it ignores ASCII case in searching for the substring.
char * | purple_str_size_to_units (size_t size)
| Returns a string representing a filesize in the appropriate units (MB, KB, GB, etc.)
char * | purple_str_seconds_to_string (guint sec)
| Converts seconds into a human-readable form.
char * | purple_str_binary_to_ascii (const unsigned char *binary, guint len)
| Converts a binary string into a NUL terminated ascii string, replacing nonascii characters and characters below SPACE (including NUL) into \xyy, where yy are two hex digits.

## Date/Time Functions <br>
#define | PURPLE_NO_TZ_OFF -500000
| Used by purple_str_to_time to indicate no timezone offset was specified in the timestamp string.
const char * | purple_utf8_strftime (const char *format, const struct tm *tm)
| Formats a time into the specified format.
const char * | purple_get_tzoff_str (const struct tm *tm, gboolean iso)
| Gets a string representation of the local timezone offset.
const char * | purple_date_format_short (const struct tm *tm)
| Formats a time into the user's preferred short date format.
const char * | purple_date_format_long (const struct tm *tm)
| Formats a time into the user's preferred short date plus time format.
const char * | purple_date_format_full (const struct tm *tm)
| Formats a time into the user's preferred full date and time format.
const char * | purple_time_format (const struct tm *tm)
| Formats a time into the user's preferred time format.
time_t | purple_time_build (int year, int month, int day, int hour, int min, int sec)
| Builds a time_t from the supplied information.
time_t | purple_str_to_time (const char *timestamp, gboolean utc, struct tm *tm, long *tz_off, const char **rest)
| Parses a timestamp in jabber, ISO8601, or MM/DD/YYYY format and returns a time_t.

## URI/URL Functions <br>
#define | purple_util_fetch_url(url, full, user_agent, http11, cb, data)
| Fetches the data from a URL, and passes it to a callback function.
#define | purple_util_fetch_url_len(url, full, user_agent, http11, max_len, cb, data)
| Fetches the data from a URL, and passes it to a callback function.
#define | purple_add_eight(x) ((x)+8)
| Adds 8 to something.
typedef void(* | PurpleUtilFetchUrlCallback) (PurpleUtilFetchUrlData *url_data, gpointer user_data, const gchar *url_text, gsize len, const gchar *error_message)
| This is the signature used for functions that act as the callback to purple_util_fetch_url() or purple_util_fetch_url_request().
void | purple_got_protocol_handler_uri (const char *uri)
gboolean | purple_url_parse (const char *url, char **ret_host, int *ret_port, char **ret_path, char **ret_user, char **ret_passwd)
| Parses a URL, returning its host, port, file path, username and password.
PurpleUtilFetchUrlData * | purple_util_fetch_url_request (const gchar *url, gboolean full, const gchar *user_agent, gboolean http11, const gchar *request, gboolean include_headers, PurpleUtilFetchUrlCallback callback, gpointer data)
| Fetches the data from a URL, and passes it to a callback function.
PurpleUtilFetchUrlData * | purple_util_fetch_url_request_len (const gchar *url, gboolean full, const gchar *user_agent, gboolean http11, const gchar *request, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, gpointer data)
| Fetches the data from a URL, and passes it to a callback function.
PurpleUtilFetchUrlData * | purple_util_fetch_url_request_len_with_account (PurpleAccount *account, const gchar *url, gboolean full, const gchar *user_agent, gboolean http11, const gchar *request, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, gpointer data)
| Fetches the data from a URL, and passes it to a callback function.
PurpleUtilFetchUrlData * | purple_util_fetch_url_request_data_len_with_account (PurpleAccount *account, const char *url, gboolean full, const char *user_agent, gboolean http11, const char *request, gsize request_len, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, void *user_data)
| Fetches the data from a URL, and passes it to a callback function.
void | purple_util_fetch_url_cancel (PurpleUtilFetchUrlData *url_data)
| Cancel a pending URL request started with either purple_util_fetch_url_request() or purple_util_fetch_url().
const char * | purple_url_decode (const char *str)
| Decodes a URL into a plain string.
const char * | purple_url_encode (const char *str)
| Encodes a URL into an escaped string.
gboolean | purple_email_is_valid (const char *address)
| Checks if the given email address is syntactically valid.
gboolean | purple_ip_address_is_valid (const char *ip)
| Checks if the given IP address is a syntactically valid IPv4 address.
gboolean | purple_ipv4_address_is_valid (const char *ip)
| Checks if the given IP address is a syntactically valid IPv4 address.
gboolean | purple_ipv6_address_is_valid (const char *ip)
| Checks if the given IP address is a syntactically valid IPv6 address.
GList * | purple_uri_list_extract_uris (const gchar *uri_list)
| This function extracts a list of URIs from the a "text/uri-list" string.
GList * | purple_uri_list_extract_filenames (const gchar *uri_list)
| This function extracts a list of filenames from a "text/uri-list" string.
char * | purple_uri_escape_for_open (const char *unescaped)
| This function escapes any characters that might be interpreted by the shell when executing a program to open a URI on some systems.
gchar * | purple_utf8_try_convert (const char *str)
| Attempts to convert a string to UTF-8 from an unknown encoding.
gchar * | purple_utf8_salvage (const char *str)
| Salvages the valid UTF-8 characters from a string, replacing any invalid characters with a filler character (currently hardcoded to '?').
gchar * | purple_utf8_strip_unprintables (const gchar *str)
| Removes unprintable characters from a UTF-8 string.
const gchar * | purple_gai_strerror (gint errnum)
| Return the UTF-8 version of gai_strerror().
int | purple_utf8_strcasecmp (const char *a, const char *b)
| Compares two UTF-8 strings case-insensitively.
gboolean | purple_utf8_has_word (const char *haystack, const char *needle)
| Case insensitive search for a word in a string.
void | purple_print_utf8_to_console (FILE *filestream, char *message)
| Prints a UTF-8 message to the given file stream.
gboolean | purple_message_meify (char *message, gssize len)
| Checks for messages starting (post-HTML) with "/me ", including the space.
char * | purple_text_strip_mnemonic (const char *in)
| Removes the underscore characters from a string used identify the mnemonic character.
const char * | purple_unescape_filename (const char *str)
| Does the reverse of purple_escape_filename.
const char * | purple_escape_filename (const char *str)
| Escapes filesystem-unfriendly characters from a filename.
const char * | _purple_oscar_convert (const char *act, const char *protocol)
| This is added temporarily to assist the split of oscar into aim and icq.
void | purple_restore_default_signal_handlers (void)
| Restore default signal handlers for signals which might reasonably have handlers.
const gchar * | purple_get_host_name (void)
| Gets the host name of the machine.
gchar * | purple_uuid_random (void)
| Returns a type 4 (random) UUID.

## Detailed Description

Utility Functions.

Definition in file util.h.

## Macro Definition Documentation

## ◆ purple_add_eight

#define purple_add_eight | ( |  | x | ) | ((x)+8)

Adds 8 to something.

Blame SimGuy.

Parameters

  x | The number to add 8 to.

Returns
  x + 8

Definition at line 1468 of file util.h.

## ◆ PURPLE_NO_TZ_OFF

#define PURPLE_NO_TZ_OFF -500000

Used by purple_str_to_time to indicate no timezone offset was specified in the timestamp string.

Definition at line 391 of file util.h.

## ◆ purple_util_fetch_url

#define purple_util_fetch_url | ( |  | url,
|  |  | full,
|  |  | user_agent,
|  |  | http11,
|  |  | cb,
|  |  | data
| ) |  |

Value:
purple_util_fetch_url_request(url, full, user_agent, http11, NULL, \
FALSE, cb, data);
purple_util_fetch_url_request
PurpleUtilFetchUrlData * purple_util_fetch_url_request(const gchar *url, gboolean full, const gchar *user_agent, gboolean http11, const gchar *request, gboolean include_headers, PurpleUtilFetchUrlCallback callback, gpointer data)
Fetches the data from a URL, and passes it to a callback function.

Fetches the data from a URL, and passes it to a callback function.

Parameters

  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  cb | The callback function.
  data | The user data to pass to the callback function.

Definition at line 1123 of file util.h.

## ◆ purple_util_fetch_url_len

#define purple_util_fetch_url_len | ( |  | url,
|  |  | full,
|  |  | user_agent,
|  |  | http11,
|  |  | max_len,
|  |  | cb,
|  |  | data
| ) |  |

Value:
purple_util_fetch_url_request_len(url, full, user_agent, http11, NULL, \
FALSE, max_len, cb, data);
purple_util_fetch_url_request_len
PurpleUtilFetchUrlData * purple_util_fetch_url_request_len(const gchar *url, gboolean full, const gchar *user_agent, gboolean http11, const gchar *request, gboolean include_headers, gssize max_len, PurpleUtilFetchUrlCallback callback, gpointer data)
Fetches the data from a URL, and passes it to a callback function.

Fetches the data from a URL, and passes it to a callback function.

Parameters

  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  max_len | The maximum number of bytes to retrieve (-1 for unlimited)
  cb | The callback function.
  data | The user data to pass to the callback function.

Deprecated:
  In 3.0.0, we'll rename this to "purple_util_fetch_url" and get rid of the old one

Definition at line 1140 of file util.h.

## Typedef Documentation

## ◆ PurpleInfoFieldFormatCallback

typedef char *(* PurpleInfoFieldFormatCallback) (const char *field, size_t len)

Definition at line 62 of file util.h.

## ◆ PurpleKeyValuePair

typedef struct _PurpleKeyValuePair PurpleKeyValuePair

A key-value pair.

This is used by, among other things, purple_gtk_combo* functions to pass in a list of key-value pairs so it can display a user-friendly value.

Definition at line 42 of file util.h.

## ◆ PurpleMenuAction

typedef struct _PurpleMenuAction PurpleMenuAction

Definition at line 40 of file util.h.

## ◆ PurpleUtilFetchUrlCallback

typedef void(* PurpleUtilFetchUrlCallback) (PurpleUtilFetchUrlData *url_data, gpointer user_data, const gchar *url_text, gsize len, const gchar *error_message)

This is the signature used for functions that act as the callback to purple_util_fetch_url() or purple_util_fetch_url_request().

Parameters

  url_data | The same value that was returned when you called purple_fetch_url() or purple_fetch_url_request().
  user_data | The user data that your code passed into either purple_util_fetch_url() or purple_util_fetch_url_request().
  url_text | This will be NULL on error. Otherwise this will contain the contents of the URL.
  len | 0 on error, otherwise this is the length of buf.
  error_message | If something went wrong then this will contain a descriptive error message, and buf will be NULL and len will be 0.

Definition at line 1110 of file util.h.

## ◆ PurpleUtilFetchUrlData

typedef struct _PurpleUtilFetchUrlData PurpleUtilFetchUrlData

An opaque structure representing a URL request.

Can be used to cancel the request.

Definition at line 38 of file util.h.

## Function Documentation

## ◆ _purple_oscar_convert()

const char * _purple_oscar_convert | ( | const char * | act,
|  | const char * | protocol
| ) |  |

This is added temporarily to assist the split of oscar into aim and icq.

This should not be used by plugins.

Deprecated:
  This function should not be used in new code and should be removed in 3.0.0. The aim/icq prpl split happened a long time ago, and we don't need to keep migrating old data.

## ◆ purple_base16_decode()

guchar * purple_base16_decode | ( | const char * | str,
|  | gsize * | ret_len
| ) |  |

Converts an ASCII string of base-16 encoded data to the binary equivalent.

Parameters

  str | The base-16 string to convert to raw data.
  ret_len | The length of the returned data. You can pass in NULL if you're sure that you know the length of the decoded data, or if you know you'll be able to use strlen to determine the length, etc.

Returns
  The raw data. Must be g_free'd when no longer needed.

See also
  purple_base16_encode()

## ◆ purple_base16_encode()

gchar * purple_base16_encode | ( | const guchar * | data,
|  | gsize | len
| ) |  |

Converts a chunk of binary data to its base-16 equivalent.

Parameters

  data | The data to convert.
  len | The length of the data.

Returns
  The base-16 string in the ASCII encoding. Must be g_free'd when no longer needed.

See also
  purple_base16_decode()

## ◆ purple_base16_encode_chunked()

gchar * purple_base16_encode_chunked | ( | const guchar * | data,
|  | gsize | len
| ) |  |

Converts a chunk of binary data to a chunked base-16 representation (handy for key fingerprints)

Example output: 01:23:45:67:89:AB:CD:EF

Parameters

  data | The data to convert.
  len | The length of the data.

Returns
  The base-16 string in the ASCII chunked encoding. Must be g_free'd when no longer needed.

## ◆ purple_base64_decode()

guchar * purple_base64_decode | ( | const char * | str,
|  | gsize * | ret_len
| ) |  |

Converts an ASCII string of base-64 encoded data to the binary equivalent.

Parameters

  str | The base-64 string to convert to raw data.
  ret_len | The length of the returned data. You can pass in NULL if you're sure that you know the length of the decoded data, or if you know you'll be able to use strlen to determine the length, etc.

Returns
  The raw data. Must be g_free'd when no longer needed.

See also
  purple_base64_encode()

## ◆ purple_base64_encode()

gchar * purple_base64_encode | ( | const guchar * | data,
|  | gsize | len
| ) |  |

Converts a chunk of binary data to its base-64 equivalent.

Parameters

  data | The data to convert.
  len | The length of the data.

Returns
  The base-64 string in the ASCII encoding. Must be g_free'd when no longer needed.

See also
  purple_base64_decode()

## ◆ purple_build_dir()

int purple_build_dir | ( | const char * | path,
|  | int | mode
| ) |  |

Builds a complete path from the root, making any directories along the path which do not already exist.

Parameters

  path | The path you wish to create. Note that it must start from the root or this function will fail.
  mode | Unix-style permissions for this directory.

Returns
  0 for success, nonzero on any error.

## ◆ purple_date_format_full()

const char * purple_date_format_full | ( | const struct tm * | tm | ) |

Formats a time into the user's preferred full date and time format.

The returned string is stored in a static buffer, so the result should be g_strdup()'d if it's going to be kept.

Parameters

  tm | The time to format, or `NULL` to use the current local time

Returns
  The date and time, formatted as per the user's settings.

## ◆ purple_date_format_long()

const char * purple_date_format_long | ( | const struct tm * | tm | ) |

Formats a time into the user's preferred short date plus time format.

The returned string is stored in a static buffer, so the result should be g_strdup()'d if it's going to be kept.

Parameters

  tm | The time to format, or `NULL` to use the current local time

Returns
  The timestamp, formatted as per the user's settings.

## ◆ purple_date_format_short()

const char * purple_date_format_short | ( | const struct tm * | tm | ) |

Formats a time into the user's preferred short date format.

The returned string is stored in a static buffer, so the result should be g_strdup()'d if it's going to be kept.

Parameters

  tm | The time to format, or `NULL` to use the current local time

Returns
  The date, formatted as per the user's settings.

## ◆ purple_email_is_valid()

gboolean purple_email_is_valid | ( | const char * | address | ) |

Checks if the given email address is syntactically valid.

Parameters

  address | The email address to validate.

Returns
  True if the email address is syntactically correct.

## ◆ purple_escape_filename()

const char * purple_escape_filename | ( | const char * | str | ) |

Escapes filesystem-unfriendly characters from a filename.

Parameters

  str | The string to translate.

Returns
  The resulting string.

## ◆ purple_fd_get_ip()

char * purple_fd_get_ip | ( | int | fd | ) |

Returns the IP address from a socket file descriptor.

Parameters

  fd | The socket file descriptor.

Returns
  The IP address, or `NULL` on error.

## ◆ purple_gai_strerror()

const gchar * purple_gai_strerror | ( | gint | errnum | ) |

Return the UTF-8 version of gai_strerror().

It calls gai_strerror() then converts the result to UTF-8. This function is analogous to g_strerror().

Parameters

  errnum | The error code.

Returns
  The UTF-8 error message.

Since
  2.4.0

## ◆ purple_get_host_name()

const gchar * purple_get_host_name | ( | void |  | ) |

Gets the host name of the machine.

If it not possible to determine the host name, "localhost" is returned

Note
  The return value of this function must not be modified or freed.

Returns
  The hostname

## ◆ purple_get_tzoff_str()

const char * purple_get_tzoff_str | ( | const struct tm * | tm,
|  | gboolean | iso
| ) |  |

Gets a string representation of the local timezone offset.

Parameters

  tm | The time to get the timezone for
  iso | TRUE to format the offset according to ISO-8601, FALSE to not substitute 'Z' for 0 offset, and to not separate hours and minutes with a colon.

## ◆ purple_home_dir()

const gchar * purple_home_dir | ( | void |  | ) |

Returns the user's home directory.

Returns
  The user's home directory.

See also
  purple_user_dir()

## ◆ purple_ip_address_is_valid()

gboolean purple_ip_address_is_valid | ( | const char * | ip | ) |

Checks if the given IP address is a syntactically valid IPv4 address.

Parameters

  ip | The IP address to validate.

Returns
  True if the IP address is syntactically correct.

Deprecated:
  This function will be replaced with one that validates as either IPv4 or IPv6 in 3.0.0. If you don't want this, behavior, use one of the more specific functions.

## ◆ purple_ipv4_address_is_valid()

gboolean purple_ipv4_address_is_valid | ( | const char * | ip | ) |

Checks if the given IP address is a syntactically valid IPv4 address.

Parameters

  ip | The IP address to validate.

Returns
  True if the IP address is syntactically correct.

Since
  2.6.0

## ◆ purple_ipv6_address_is_valid()

gboolean purple_ipv6_address_is_valid | ( | const char * | ip | ) |

Checks if the given IP address is a syntactically valid IPv6 address.

Parameters

  ip | The IP address to validate.

Returns
  True if the IP address is syntactically correct.

Since
  2.6.0

## ◆ purple_markup_escape_text()

gchar * purple_markup_escape_text | ( | const gchar * | text,
|  | gssize | length
| ) |  |

Escapes special characters in a plain-text string so they display correctly as HTML.

For example, & is replaced with & and < is replaced with <

This is exactly the same as g_markup_escape_text(), except that it does not change ' to ' because ' is not a valid HTML 4 entity, and is displayed literally in IE7.

Since
  2.6.0

## ◆ purple_markup_extract_info_field()

gboolean purple_markup_extract_info_field | ( | const char * | str,
|  | int | len,
|  | PurpleNotifyUserInfo * | user_info,
|  | const char * | start_token,
|  | int | skip,
|  | const char * | end_token,
|  | char | check_value,
|  | const char * | no_value_token,
|  | const char * | display_name,
|  | gboolean | is_link,
|  | const char * | link_prefix,
|  | PurpleInfoFieldFormatCallback | format_cb
| ) |  |

Extracts a field of data from HTML.

This is a scary function. It used to be used for MSN and Yahoo prpls, but since those prpls have been removed, this is now deprecated.

Parameters

  str | The string to parse.
  len | The size of str.
  user_info | The destination PurpleNotifyUserInfo to which the new field info should be added.
  start_token | The beginning token.
  skip | The number of characters to skip after the start token.
  end_token | The ending token.
  check_value | The value that the last character must meet.
  no_value_token | The token indicating no value is given.
  display_name | The short descriptive name to display for this token.
  is_link | TRUE if this should be a link, or FALSE otherwise.
  link_prefix | The prefix for the link.
  format_cb | A callback to format the value before adding it.

Returns
  TRUE if successful, or FALSE otherwise.

## ◆ purple_markup_find_tag()

gboolean purple_markup_find_tag | ( | const char * | needle,
|  | const char * | haystack,
|  | const char ** | start,
|  | const char ** | end,
|  | GData ** | attributes
| ) |  |

Finds an HTML tag matching the given name.

This locates an HTML tag's start and end, and stores its attributes in a GData hash table. The names of the attributes are lower-cased in the hash table, and the name of the tag is case insensitive.

Parameters

  needle | The name of the tag
  haystack | The null-delimited string to search in
  start | A pointer to the start of the tag if found
  end | A pointer to the end of the tag if found
  attributes | The attributes, if the tag was found. This should be freed with g_datalist_clear().

Returns
  TRUE if the tag was found

## ◆ purple_markup_get_css_property()

char * purple_markup_get_css_property | ( | const gchar * | style,
|  | const gchar * | opt
| ) |  |

Returns a newly allocated string containing the value of the CSS property specified in opt.

The style argument is expected to point to a HTML inline CSS. The function will seek for the CSS property and return its value.

For example, purple_markup_get_css_property("direction:rtl;color:#dc4d1b;", "color") would return "#dc4d1b".

On error or if the requested property was not found, the function returns `NULL`.

Parameters

  style | A string containing the inline CSS text.
  opt | The requested CSS property.

Returns
  The value of the requested CSS property.

## ◆ purple_markup_get_tag_name()

char * purple_markup_get_tag_name | ( | const char * | tag | ) |

Returns a newly allocated string containing the name of the tag located at "tag".

Tag is expected to point to a '<', and contain a '>' sometime after that. If there is no '>' and the string is not NUL terminated, this function can be expected to segfault.

Parameters

  tag | The string starting a HTML tag.

Returns
  A string containing the name of the tag.

## ◆ purple_markup_html_to_xhtml()

void purple_markup_html_to_xhtml | ( | const char * | html,
|  | char ** | dest_xhtml,
|  | char ** | dest_plain
| ) |  |

Converts HTML markup to XHTML.

Parameters

  html | The HTML markup.
  dest_xhtml | The destination XHTML output.
  dest_plain | The destination plain-text output.

## ◆ purple_markup_is_rtl()

gboolean purple_markup_is_rtl | ( | const char * | html | ) |

Check if the given HTML contains RTL text.

Parameters

  html | The HTML text.

Returns
  TRUE if the text contains RTL text, FALSE otherwise.

Since
  2.6.0

## ◆ purple_markup_linkify()

char * purple_markup_linkify | ( | const char * | str | ) |

Adds the necessary HTML code to turn URIs into HTML links in a string.

Parameters

  str | The string to linkify.

Returns
  The new string with all URIs surrounded in standard HTML tags. You must g_free this string when finished with it.

## ◆ purple_markup_slice()

char * purple_markup_slice | ( | const char * | str,
|  | guint | x,
|  | guint | y
| ) |  |

Returns a newly allocated substring of the HTML UTF-8 string "str".

The markup is preserved such that the substring will have the same formatting as original string, even though some tags may have been opened before "x", or may close after "y". All open tags are closed at the end of the returned string, in the proper order.

Note that x and y are in character offsets, not byte offsets, and are offsets into an unformatted version of str. Because of this, this function may be sensitive to changes in GtkIMHtml and may break when used with other UI's. libpurple users are encouraged to report and work out any problems encountered.

Parameters

  str | The input NUL terminated, HTML, UTF-8 (or ASCII) string.
  x | The character offset into an unformatted version of str to begin at.
  y | The character offset (into an unformatted vesion of str) of one past the last character to include in the slice.

Returns
  The HTML slice of string, with all formatting retained.

## ◆ purple_markup_strip_html()

char * purple_markup_strip_html | ( | const char * | str | ) |

Strips HTML tags from a string.

Parameters

  str | The string to strip HTML from.

Returns
  The new string without HTML. You must g_free this string when finished with it.

## ◆ purple_markup_unescape_entity()

const char * purple_markup_unescape_entity | ( | const char * | text,
|  | int * | length
| ) |  |

Returns a constant string of the character representation of the HTML entity pointed to by text.

For example, purple_markup_unescape_entity("&amp;") will return "&". The text variable is expected to point to an '&', the first character of the entity. If given an unrecognized entity, the function returns `NULL`.

Note that this function, unlike purple_unescape_html(), does not search the string for the entity, does not replace the entity, and does not return a newly allocated string.

Parameters

  text | A string containing an HTML entity.
  length | If not `NULL`, the string length of the entity is stored in this location.

Returns
  A constant string containing the character representation of the given entity.

## ◆ purple_menu_action_free()

void purple_menu_action_free | ( | PurpleMenuAction * | act | ) |

Frees a PurpleMenuAction.

Parameters

  act | The PurpleMenuAction to free.

## ◆ purple_menu_action_new()

PurpleMenuAction * purple_menu_action_new | ( | const char * | label,
|  | PurpleCallback | callback,
|  | gpointer | data,
|  | GList * | children
| ) |  |

Creates a new PurpleMenuAction.

Parameters

  label | The text label to display for this action.
  callback | The function to be called when the action is used on the selected item.
  data | Additional data to be passed to the callback.
  children | A GList of PurpleMenuActions to be added as a submenu of the action.

Returns
  The PurpleMenuAction.

## ◆ purple_message_meify()

gboolean purple_message_meify | ( | char * | message,
|  | gssize | len
| ) |  |

Checks for messages starting (post-HTML) with "/me ", including the space.

Parameters

  message | The message to check
  len | The message length, or -1

Returns
  TRUE if it starts with "/me ", and it has been removed, otherwise FALSE

## ◆ purple_mime_decode_field()

char * purple_mime_decode_field | ( | const char * | str | ) |

Converts a MIME header field string back to its readable equivalent according to RFC 2047.

Basically, a header is plain ASCII and can contain any number of sections called "encoded-words." The format of an encoded word is =?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= =? designates the beginning of the encoded-word ?= designates the end of the encoded-word

An encoded word is segmented into three pieces by the use of a question mark. The first piece is the character set, the second piece is the encoding, and the third piece is the encoded text.

Parameters

  str | The ASCII string, possibly containing any number of encoded-word sections.

Returns
  The string, with any encoded-word sections decoded and converted to UTF-8. Must be g_free'd when no longer needed.

## ◆ purple_mkstemp()

FILE * purple_mkstemp | ( | char ** | path,
|  | gboolean | binary
| ) |  |

Creates a temporary file and returns a file pointer to it.

This is like mkstemp(), but returns a file pointer and uses a pre-set template. It uses the semantics of tempnam() for the directory to use and allocates the space for the file path.

The caller is responsible for closing the file and removing it when done, as well as freeing the space pointed to by path with g_free().

Parameters

  path | The returned path to the temp file.
  binary | Text or binary, for platforms where it matters.

Returns
  A file pointer to the temporary file, or `NULL` on failure.

## ◆ purple_normalize()

const char * purple_normalize | ( | const PurpleAccount * | account,
|  | const char * | str
| ) |  |

Normalizes a string, so that it is suitable for comparison.

The returned string will point to a static buffer, so if the string is intended to be kept long-term, you must g_strdup() it. Also, calling normalize() twice in the same line will lead to problems.

Parameters

  account | The account the string belongs to, or NULL if you do not know the account. If you use NULL, the string will still be normalized, but if the PRPL uses a custom normalization function then the string may not be normalized correctly.
  str | The string to normalize.

Returns
  A pointer to the normalized version stored in a static buffer.

## ◆ purple_normalize_nocase()

const char * purple_normalize_nocase | ( | const PurpleAccount * | account,
|  | const char * | str
| ) |  |

Normalizes a string, so that it is suitable for comparison.

This is one possible implementation for the PRPL callback function "normalize." It returns a lowercase and UTF-8 normalized version of the string.

Parameters

  account | The account the string belongs to.
  str | The string to normalize.

Returns
  A pointer to the normalized version stored in a static buffer.

## ◆ purple_print_utf8_to_console()

void purple_print_utf8_to_console | ( | FILE * | filestream,
|  | char * | message
| ) |  |

Prints a UTF-8 message to the given file stream.

The function tries to convert the UTF-8 message to user's locale. If this is not possible, the original UTF-8 text will be printed.

Parameters

  filestream | The file stream (e.g. STDOUT or STDERR)
  message | The message to print.

## ◆ purple_program_is_valid()

gboolean purple_program_is_valid | ( | const char * | program | ) |

Checks if the given program name is valid and executable.

Parameters

  program | The file name of the application.

Returns
  TRUE if the program is runable.

## ◆ purple_quotedp_decode()

guchar * purple_quotedp_decode | ( | const char * | str,
|  | gsize * | ret_len
| ) |  |

Converts a quoted printable string back to its readable equivalent.

What is a quoted printable string, you ask? It's an encoding used to transmit binary data as ASCII. It's intended purpose is to send emails containing non-ASCII characters. Wikipedia has a pretty good explanation. Also see RFC 2045.

Parameters

  str | The quoted printable ASCII string to convert to raw data.
  ret_len | The length of the returned data.

Returns
  The readable string. Must be g_free'd when no longer needed.

## ◆ purple_restore_default_signal_handlers()

void purple_restore_default_signal_handlers | ( | void |  | ) |

Restore default signal handlers for signals which might reasonably have handlers.

This should be called by a fork()'d child process, since child processes inherit the handlers of the parent.

## ◆ purple_running_gnome()

gboolean purple_running_gnome | ( | void |  | ) |

Check if running GNOME.

Returns
  TRUE if running GNOME, FALSE otherwise.

## ◆ purple_running_kde()

gboolean purple_running_kde | ( | void |  | ) |

Check if running KDE.

Returns
  TRUE if running KDE, FALSE otherwise.

## ◆ purple_running_osx()

gboolean purple_running_osx | ( | void |  | ) |

Check if running OS X.

Returns
  TRUE if running OS X, FALSE otherwise.

## ◆ purple_socket_get_family()

int purple_socket_get_family | ( | int | fd | ) |

Returns the address family of a socket.

Parameters

  fd | The socket file descriptor.

Returns
  The address family of the socket (AF_INET, AF_INET6, etc) or -1 on error.

Since
  2.7.0

## ◆ purple_socket_speaks_ipv4()

gboolean purple_socket_speaks_ipv4 | ( | int | fd | ) |

Returns TRUE if a socket is capable of speaking IPv4.

This is the case for IPv4 sockets and, on some systems, IPv6 sockets (due to the IPv4-mapped address functionality).

Parameters

  fd | The socket file descriptor

Returns
  TRUE if a socket can speak IPv4.

Since
  2.7.0

## ◆ purple_str_add_cr()

char * purple_str_add_cr | ( | const char * | str | ) |

Ensures that all linefeeds have a matching carriage return.

Parameters

  str | The source string.

Returns
  The string with carriage returns.

## ◆ purple_str_binary_to_ascii()

char * purple_str_binary_to_ascii | ( | const unsigned char * | binary,
|  | guint | len
| ) |  |

Converts a binary string into a NUL terminated ascii string, replacing nonascii characters and characters below SPACE (including NUL) into \xyy, where yy are two hex digits.

Also backslashes are changed into two backslashes (\\). The returned, newly allocated string can be outputted to the console, and must be g_free()d.

Parameters

  binary | A string of random data, possibly with embedded NULs and such.
  len | The length in bytes of the input string. Must not be 0.

Returns
  A newly allocated ASCIIZ string.

## ◆ purple_str_has_prefix()

gboolean purple_str_has_prefix | ( | const char * | s,
|  | const char * | p
| ) |  |

Compares two strings to see if the first contains the second as a proper prefix.

Parameters

  s | The string to check.
  p | The prefix in question.

Returns
  TRUE if p is a prefix of s, otherwise FALSE.

## ◆ purple_str_has_suffix()

gboolean purple_str_has_suffix | ( | const char * | s,
|  | const char * | x
| ) |  |

Compares two strings to see if the second is a proper suffix of the first.

Parameters

  s | The string to check.
  x | The suffix in question.

Returns
  TRUE if x is a a suffix of s, otherwise FALSE.

## ◆ purple_str_seconds_to_string()

char * purple_str_seconds_to_string | ( | guint | sec | ) |

Converts seconds into a human-readable form.

Parameters

  sec | The seconds.

Returns
  A human-readable form, containing days, hours, minutes, and seconds.

## ◆ purple_str_size_to_units()

char * purple_str_size_to_units | ( | size_t | size | ) |

Returns a string representing a filesize in the appropriate units (MB, KB, GB, etc.)

Parameters

  size | The size

Returns
  The string in units form. This must be freed.

## ◆ purple_str_strip_char()

void purple_str_strip_char | ( | char * | str,
|  | char | thechar
| ) |  |

Strips all instances of the given character from the given string.

The string is modified in place. This is useful for stripping new line characters, for example.

Example usage: purple_str_strip_char(my_dumb_string, '
');

Parameters

  str | The string to strip characters from.
  thechar | The character to strip from the given string.

## ◆ purple_str_to_time()

time_t purple_str_to_time | ( | const char * | timestamp,
|  | gboolean | utc,
|  | struct tm * | tm,
|  | long * | tz_off,
|  | const char ** | rest
| ) |  |

Parses a timestamp in jabber, ISO8601, or MM/DD/YYYY format and returns a time_t.

Parameters

  timestamp | The timestamp
  utc | Assume UTC if no timezone specified
  tm | If not `NULL`, the caller can get a copy of the struct tm used to calculate the time_t return value.
  tz_off | If not `NULL`, the caller can get a copy of the timezone offset (from UTC) used to calculate the time_t return value. Note: Zero is a valid offset. As such, the value of the macro `PURPLE_NO_TZ_OFF` indicates no offset was specified (which means that the local timezone was used in the calculation).
  rest | If not `NULL`, the caller can get a pointer to the part of timestamp left over after parsing is completed, if it's not the end of timestamp.

Returns
  A time_t.

## ◆ purple_strcasereplace()

gchar * purple_strcasereplace | ( | const char * | string,
|  | const char * | delimiter,
|  | const char * | replacement
| ) |  |

Given a string, this replaces one substring with another ignoring case and returns a newly allocated string.

Parameters

  string | The string from which to replace stuff.
  delimiter | The substring you want replaced.
  replacement | The substring you want inserted in place of the delimiting substring.

Returns
  A new string, after performing the substitution. free this with g_free().

## ◆ purple_strcasestr()

const char * purple_strcasestr | ( | const char * | haystack,
|  | const char * | needle
| ) |  |

This is like strstr, except that it ignores ASCII case in searching for the substring.

Parameters

  haystack | The string to search in.
  needle | The substring to find.

Returns
  the location of the substring if found, or NULL if not

## ◆ purple_strdup_withhtml()

gchar * purple_strdup_withhtml | ( | const gchar * | src | ) |

Duplicates a string and replaces all newline characters from the source string with HTML linebreaks.

Parameters

  src | The source string.

Returns
  The new string. Must be g_free'd by the caller.

## ◆ purple_strequal()

gboolean purple_strequal | ( | const gchar * | left,
|  | const gchar * | right
| ) |  |

Tests two strings for equality.

Unlike strcmp(), this function will not crash if one or both of the strings are `NULL`.

Parameters

  left | A string
  right | A string to compare with left

Returns
  `TRUE` if the strings are the same, else `FALSE`.

Since
  2.6.0

## ◆ purple_strreplace()

gchar * purple_strreplace | ( | const char * | string,
|  | const char * | delimiter,
|  | const char * | replacement
| ) |  |

Given a string, this replaces one substring with another and returns a newly allocated string.

Parameters

  string | The string from which to replace stuff.
  delimiter | The substring you want replaced.
  replacement | The substring you want inserted in place of the delimiting substring.

Returns
  A new string, after performing the substitution. free this with g_free().

## ◆ purple_text_strip_mnemonic()

char * purple_text_strip_mnemonic | ( | const char * | in | ) |

Removes the underscore characters from a string used identify the mnemonic character.

Parameters

  in | The string to strip

Returns
  The stripped string

## ◆ purple_time_build()

time_t purple_time_build | ( | int | year,
|  | int | month,
|  | int | day,
|  | int | hour,
|  | int | min,
|  | int | sec
| ) |  |

Builds a time_t from the supplied information.

Parameters

  year | The year.
  month | The month.
  day | The day.
  hour | The hour.
  min | The minute.
  sec | The second.

Returns
  A time_t.

## ◆ purple_time_format()

const char * purple_time_format | ( | const struct tm * | tm | ) |

Formats a time into the user's preferred time format.

The returned string is stored in a static buffer, so the result should be g_strdup()'d if it's going to be kept.

Parameters

  tm | The time to format, or `NULL` to use the current local time

Returns
  The time, formatted as per the user's settings.

## ◆ purple_unescape_filename()

const char * purple_unescape_filename | ( | const char * | str | ) |

Does the reverse of purple_escape_filename.

This will change hex codes and such to their ascii equivalents.

Parameters

  str | The string to translate.

Returns
  The resulting string.

## ◆ purple_unescape_html()

char * purple_unescape_html | ( | const char * | html | ) |

Unescapes HTML entities to their literal characters and converts "<br>" to "\n".

See purple_unescape_text() for more details.

Parameters

  html | The string in which to unescape any HTML entities

Returns
  The text with HTML entities literalized. You must g_free this string when finished with it.

See also
  purple_unescape_text()

## ◆ purple_unescape_text()

char * purple_unescape_text | ( | const char * | text | ) |

Unescapes HTML entities to their literal characters in the text.

For example "&amp;" is replaced by '&' and so on. Also converts numerical entities (e.g. "&#38;" is also '&').

This function currently supports the following named entities: "&amp;", "&lt;", "&gt;", "&copy;", "&quot;", "&reg;", "&apos;"

purple_unescape_html() is similar, but also converts "<br>" into "\n".

Parameters

  text | The string in which to unescape any HTML entities

Returns
  The text with HTML entities literalized. You must g_free this string when finished with it.

See also
  purple_unescape_html()

Since
  2.7.0

## ◆ purple_uri_escape_for_open()

char * purple_uri_escape_for_open | ( | const char * | unescaped | ) |

This function escapes any characters that might be interpreted by the shell when executing a program to open a URI on some systems.

Parameters

  unescaped | The unescaped URI.

Returns
  A newly allocated string with any shell metacharacters replaced with their escaped equivalents.

## ◆ purple_uri_list_extract_filenames()

GList * purple_uri_list_extract_filenames | ( | const gchar * | uri_list | ) |

This function extracts a list of filenames from a "text/uri-list" string.

It was "borrowed" from gnome_uri_list_extract_filenames

Parameters

  uri_list | A uri-list in the standard format.

Returns
  A GList containing strings allocated with g_malloc that contain the filenames in the uri-list. Note that unlike purple_uri_list_extract_uris() function, this will discard any non-file uri from the result value.

## ◆ purple_uri_list_extract_uris()

GList * purple_uri_list_extract_uris | ( | const gchar * | uri_list | ) |

This function extracts a list of URIs from the a "text/uri-list" string.

It was "borrowed" from gnome_uri_list_extract_uris

Parameters

  uri_list | An uri-list in the standard format.

Returns
  A GList containing strings allocated with g_malloc that have been splitted from uri-list.

## ◆ purple_url_decode()

const char * purple_url_decode | ( | const char * | str | ) |

Decodes a URL into a plain string.

This will change hex codes and such to their ascii equivalents.

Parameters

  str | The string to translate.

Returns
  The resulting string.

## ◆ purple_url_encode()

const char * purple_url_encode | ( | const char * | str | ) |

Encodes a URL into an escaped string.

This will change non-alphanumeric characters to hex codes.

Parameters

  str | The string to translate.

Returns
  The resulting string.

## ◆ purple_url_parse()

gboolean purple_url_parse | ( | const char * | url,
|  | char ** | ret_host,
|  | int * | ret_port,
|  | char ** | ret_path,
|  | char ** | ret_user,
|  | char ** | ret_passwd
| ) |  |

Parses a URL, returning its host, port, file path, username and password.

The returned data must be freed.

Parameters

  url | The URL to parse.
  ret_host | The returned host.
  ret_port | The returned port.
  ret_path | The returned path.
  ret_user | The returned username.
  ret_passwd | The returned password.

## ◆ purple_user_dir()

const char * purple_user_dir | ( | void |  | ) |

Returns the purple settings directory in the user's home directory.

This is usually ~/.purple

Returns
  The purple settings directory.

See also
  purple_home_dir()

## ◆ purple_utf8_has_word()

gboolean purple_utf8_has_word | ( | const char * | haystack,
|  | const char * | needle
| ) |  |

Case insensitive search for a word in a string.

The needle string must be contained in the haystack string and not be immediately preceded or immediately followed by another alpha-numeric character.

Parameters

  haystack | The string to search in.
  needle | The substring to find.

Returns
  TRUE if haystack has the word, otherwise FALSE

## ◆ purple_utf8_ncr_decode()

char * purple_utf8_ncr_decode | ( | const char * | in | ) |

Given a string, this replaces any numerical character references in that string with the corresponding actual utf-8 substrings, and returns a newly allocated string.

Parameters

  in | The string which might contain numerical character references.

Returns
  A new string, with numerical character references replaced with actual utf-8, free this with g_free().

## ◆ purple_utf8_ncr_encode()

char * purple_utf8_ncr_encode | ( | const char * | in | ) |

Given a string, this replaces any utf-8 substrings in that string with the corresponding numerical character reference, and returns a newly allocated string.

Parameters

  in | The string which might contain utf-8 substrings

Returns
  A new string, with utf-8 replaced with numerical character references, free this with g_free()

## ◆ purple_utf8_salvage()

gchar * purple_utf8_salvage | ( | const char * | str | ) |

Salvages the valid UTF-8 characters from a string, replacing any invalid characters with a filler character (currently hardcoded to '?').

Parameters

  str | The source string.

Returns
  A valid UTF-8 string.

## ◆ purple_utf8_strcasecmp()

int purple_utf8_strcasecmp | ( | const char * | a,
|  | const char * | b
| ) |  |

Compares two UTF-8 strings case-insensitively.

This comparison is more expensive than a simple g_utf8_collate() comparison because it calls g_utf8_casefold() on each string, which allocates new strings.

Parameters

  a | The first string.
  b | The second string.

Returns
  -1 if is less than b. 0 if is equal to b. 1 if is greater than b.

## ◆ purple_utf8_strftime()

const char * purple_utf8_strftime | ( | const char * | format,
|  | const struct tm * | tm
| ) |  |

Formats a time into the specified format.

This is essentially strftime(), but it has a static buffer and handles the UTF-8 conversion for the caller.

This function also provides the GNU z formatter if the underlying C library doesn't. However, the format string parser is very naive, which means that conversions specifiers to z cannot be guaranteed. The GNU strftime(3) man page describes z as: 'The time-zone as hour offset from GMT. Required to emit RFC822-conformant dates (using "%a, %d %b %Y %H:%M:%S %z"). (GNU)'

On Windows, this function also converts the results for Z from a timezone name (as returned by the system strftime() Z format string) to a timezone abbreviation (as is the case on Unix). As with z, conversion specifiers should not be used.

Parameters

  format | The format string, in UTF-8
  tm | The time to format, or `NULL` to use the current local time

Returns
  The formatted time, in UTF-8.

Note
  format is required to be in UTF-8. This differs from strftime(), where the format is provided in the locale charset.

## ◆ purple_utf8_strip_unprintables()

gchar * purple_utf8_strip_unprintables | ( | const gchar * | str | ) |

Removes unprintable characters from a UTF-8 string.

These characters (in particular low-ASCII characters) are invalid in XML 1.0 and thus are not allowed in XMPP and are rejected by libxml2 by default.

The returned string must be freed by the caller.

Parameters

  str | A valid UTF-8 string.

Returns
  A newly allocated UTF-8 string without the unprintable characters.

Since
  2.6.0

## ◆ purple_utf8_try_convert()

gchar * purple_utf8_try_convert | ( | const char * | str | ) |

Attempts to convert a string to UTF-8 from an unknown encoding.

This function checks the locale and tries sane defaults.

Parameters

  str | The source string.

Returns
  The UTF-8 string, or `NULL` if it could not be converted.

## ◆ purple_util_chrreplace()

void purple_util_chrreplace | ( | char * | string,
|  | char | delimiter,
|  | char | replacement
| ) |  |

Given a string, this replaces all instances of one character with another.

This happens inline (the original string IS modified).

Parameters

  string | The string from which to replace stuff.
  delimiter | The character you want replaced.
  replacement | The character you want inserted in place of the delimiting character.

## ◆ purple_util_fetch_url_cancel()

void purple_util_fetch_url_cancel | ( | PurpleUtilFetchUrlData * | url_data | ) |

Cancel a pending URL request started with either purple_util_fetch_url_request() or purple_util_fetch_url().

Parameters

  url_data | The data returned when you initiated the URL fetch.

## ◆ purple_util_fetch_url_request()

PurpleUtilFetchUrlData * purple_util_fetch_url_request | ( | const gchar * | url,
|  | gboolean | full,
|  | const gchar * | user_agent,
|  | gboolean | http11,
|  | const gchar * | request,
|  | gboolean | include_headers,
|  | PurpleUtilFetchUrlCallback | callback,
|  | gpointer | data
| ) |  |

Fetches the data from a URL, and passes it to a callback function.

Parameters

  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  request | A HTTP request to send to the server instead of the standard GET
  include_headers | If TRUE, include the HTTP headers in the response.
  callback | The callback function.
  data | The user data to pass to the callback function.

## ◆ purple_util_fetch_url_request_data_len_with_account()

PurpleUtilFetchUrlData * purple_util_fetch_url_request_data_len_with_account | ( | PurpleAccount * | account,
|  | const char * | url,
|  | gboolean | full,
|  | const char * | user_agent,
|  | gboolean | http11,
|  | const char * | request,
|  | gsize | request_len,
|  | gboolean | include_headers,
|  | gssize | max_len,
|  | PurpleUtilFetchUrlCallback | callback,
|  | void * | user_data
| ) |  |

Fetches the data from a URL, and passes it to a callback function.

Parameters

  account | The account for which the request is needed, or NULL.
  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  request | A HTTP request to send to the server instead of the standard GET
  request_len | Then length of the request being sent
  include_headers | If TRUE, include the HTTP headers in the response.
  max_len | The maximum number of bytes to retrieve, or a negative number to use the default max of 512 KiB.
  callback | The callback function.
  data | The user data to pass to the callback function.

Deprecated:
  In 3.0.0, we'll rename this to "purple_util_fetch_url_request" and get rid of the old one

## ◆ purple_util_fetch_url_request_len()

PurpleUtilFetchUrlData * purple_util_fetch_url_request_len | ( | const gchar * | url,
|  | gboolean | full,
|  | const gchar * | user_agent,
|  | gboolean | http11,
|  | const gchar * | request,
|  | gboolean | include_headers,
|  | gssize | max_len,
|  | PurpleUtilFetchUrlCallback | callback,
|  | gpointer | data
| ) |  |

Fetches the data from a URL, and passes it to a callback function.

Parameters

  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  request | A HTTP request to send to the server instead of the standard GET
  include_headers | If TRUE, include the HTTP headers in the response.
  max_len | The maximum number of bytes to retrieve (-1 for unlimited)
  callback | The callback function.
  data | The user data to pass to the callback function.

Deprecated:
  In 3.0.0, this will go away.

## ◆ purple_util_fetch_url_request_len_with_account()

PurpleUtilFetchUrlData * purple_util_fetch_url_request_len_with_account | ( | PurpleAccount * | account,
|  | const gchar * | url,
|  | gboolean | full,
|  | const gchar * | user_agent,
|  | gboolean | http11,
|  | const gchar * | request,
|  | gboolean | include_headers,
|  | gssize | max_len,
|  | PurpleUtilFetchUrlCallback | callback,
|  | gpointer | data
| ) |  |

Fetches the data from a URL, and passes it to a callback function.

Parameters

  account | The account for which the request is needed, or NULL.
  url | The URL.
  full | TRUE if this is the full URL, or FALSE if it's a partial URL.
  user_agent | The user agent field to use, or NULL.
  http11 | TRUE if HTTP/1.1 should be used to download the file.
  request | A HTTP request to send to the server instead of the standard GET
  include_headers | If TRUE, include the HTTP headers in the response.
  max_len | The maximum number of bytes to retrieve, or a negative number to use the default max of 512 KiB.
  callback | The callback function.
  data | The user data to pass to the callback function.

Deprecated:
  In 3.0.0, we'll rename this to "purple_util_fetch_url_request" and get rid of the old one

## ◆ purple_util_format_song_info()

char * purple_util_format_song_info | ( | const char * | title,
|  | const char * | artist,
|  | const char * | album,
|  | gpointer | unused
| ) |  |

Format song information.

Parameters

  title | The title of the song, `NULL` to unset the value.
  artist | The artist of the song, can be `NULL`.
  album | The album of the song, can be `NULL`.
  unused | Currently unused, must be `NULL`.

Returns
  The formatted string. The caller must g_free the returned string.

Since
  2.4.0

## ◆ purple_util_get_image_extension()

const char * purple_util_get_image_extension | ( | gconstpointer | data,
|  | size_t | len
| ) |  |

Returns an extension corresponding to the image data's file type.

Parameters

  data | A pointer to the image data
  len | The length of the image data

Returns
  The appropriate extension, or "icon" if unknown.

## ◆ purple_util_get_image_filename()

char * purple_util_get_image_filename | ( | gconstpointer | image_data,
|  | size_t | image_len
| ) |  |

Returns
  A hex encoded version of the SHA-1 hash of the data passed in with the correct file extention appended. The file extension is determined by calling purple_util_get_image_extension(). This return value must be g_freed by the caller.

## ◆ purple_util_init()

void purple_util_init | ( | void |  | ) |

Initializes the utility subsystem.

Since
  2.3.0

## ◆ purple_util_read_xml_from_file()

xmlnode * purple_util_read_xml_from_file | ( | const char * | filename,
|  | const char * | description
| ) |  |

Read the contents of a given file and parse the results into an xmlnode tree structure.

This is intended to be used to read Purple's configuration xml files (prefs.xml, pounces.xml, etc.)

Parameters

  filename | The basename of the file to open in the purple_user_dir.
  description | A very short description of the contents of this file. This is used in error messages shown to the user when the file can not be opened. For example, "preferences," or "buddy pounces."

Returns
  An xmlnode tree of the contents of the given file. Or NULL, if the file does not exist or there was an error reading the file.

## ◆ purple_util_set_current_song()

void purple_util_set_current_song | ( | const char * | title,
|  | const char * | artist,
|  | const char * | album
| ) |  |

Set the appropriate presence values for the currently playing song.

Parameters

  title | The title of the song, `NULL` to unset the value.
  artist | The artist of the song, can be `NULL`.
  album | The album of the song, can be `NULL`.

Since
  2.4.0

## ◆ purple_util_set_user_dir()

void purple_util_set_user_dir | ( | const char * | dir | ) |

Define a custom purple settings directory, overriding the default (user's home directory/.purple)

Parameters

  dir | The custom settings directory

## ◆ purple_util_uninit()

void purple_util_uninit | ( | void |  | ) |

Uninitializes the util subsystem.

Since
  2.3.0

## ◆ purple_util_write_data_to_file()

gboolean purple_util_write_data_to_file | ( | const char * | filename,
|  | const char * | data,
|  | gssize | size
| ) |  |

Write a string of data to a file of the given name in the Purple user directory ($HOME/.purple by default).

The data is typically a serialized version of one of Purple's config files, such as prefs.xml, accounts.xml, etc. And the string is typically obtained using xmlnode_to_formatted_str. However, this function should work fine for saving binary files as well.

Parameters

  filename | The basename of the file to write in the purple_user_dir.
  data | A null-terminated string of data to write.
  size | The size of the data to save. If data is null-terminated you can pass in -1.

Returns
  TRUE if the file was written successfully. FALSE otherwise.

## ◆ purple_util_write_data_to_file_absolute()

gboolean purple_util_write_data_to_file_absolute | ( | const char * | filename_full,
|  | const char * | data,
|  | gssize | size
| ) |  |

Write data to a file using the absolute path.

This exists for Glib backwards compatibility reasons.

Parameters

  filename_full | Filename to write to
  data | A null-terminated string of data to write.
  size | The size of the data to save. If data is null-terminated you can pass in -1.

Returns
  TRUE if the file was written successfully. FALSE otherwise.

Todo:
  Remove this function (use g_file_set_contents instead) when 3.0.0 rolls around.

See also
  purple_util_write_data_to_file()

## ◆ purple_uuid_random()

gchar * purple_uuid_random | ( | void |  | ) |

Returns a type 4 (random) UUID.

Returns
  A UUID, caller is responsible for freeing it

Since
  2.7.0