/usr/include/libpurple/util.h is in libpurple-dev 2.12.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* @file util.h Utility Functions
* @ingroup core
*/
/* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
* @todo Rename the functions so that they live somewhere in the purple
* namespace.
*/
#ifndef _PURPLE_UTIL_H_
#define _PURPLE_UTIL_H_
#include <stdio.h>
/**
* An opaque structure representing a URL request. Can be used to cancel
* the request.
*/
typedef struct _PurpleUtilFetchUrlData PurpleUtilFetchUrlData;
/** @copydoc _PurpleMenuAction */
typedef struct _PurpleMenuAction PurpleMenuAction;
/** @copydoc _PurpleKeyValuePair */
typedef struct _PurpleKeyValuePair PurpleKeyValuePair;
#include "account.h"
#include "signals.h"
#include "xmlnode.h"
#include "notify.h"
#ifdef __cplusplus
extern "C" {
#endif
struct _PurpleMenuAction
{
char *label;
PurpleCallback callback;
gpointer data;
GList *children;
};
typedef char *(*PurpleInfoFieldFormatCallback)(const char *field, size_t len);
/**
* 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.
*/
struct _PurpleKeyValuePair
{
gchar *key;
void *value;
};
/**
* Creates a new PurpleMenuAction.
*
* @param label The text label to display for this action.
* @param callback The function to be called when the action is used on
* the selected item.
* @param data Additional data to be passed to the callback.
* @param children A GList of PurpleMenuActions to be added as a submenu
* of the action.
* @return The PurpleMenuAction.
*/
PurpleMenuAction *purple_menu_action_new(const char *label, PurpleCallback callback,
gpointer data, GList *children);
/**
* Frees a PurpleMenuAction
*
* @param act The PurpleMenuAction to free.
*/
void purple_menu_action_free(PurpleMenuAction *act);
/**
* Set the appropriate presence values for the currently playing song.
*
* @param title The title of the song, @c NULL to unset the value.
* @param artist The artist of the song, can be @c NULL.
* @param album The album of the song, can be @c NULL.
* @since 2.4.0
*/
void purple_util_set_current_song(const char *title, const char *artist,
const char *album);
/**
* Format song information.
*
* @param title The title of the song, @c NULL to unset the value.
* @param artist The artist of the song, can be @c NULL.
* @param album The album of the song, can be @c NULL.
* @param unused Currently unused, must be @c NULL.
*
* @return The formatted string. The caller must g_free the returned string.
* @since 2.4.0
*/
char * purple_util_format_song_info(const char *title, const char *artist,
const char *album, gpointer unused);
/**************************************************************************/
/** @name Utility Subsystem */
/**************************************************************************/
/*@{*/
/**
* Initializes the utility subsystem.
*
* @since 2.3.0
*/
void purple_util_init(void);
/**
* Uninitializes the util subsystem.
*
* @since 2.3.0
*/
void purple_util_uninit(void);
/*@}*/
/**************************************************************************/
/** @name Base16 Functions */
/**************************************************************************/
/*@{*/
/**
* Converts a chunk of binary data to its base-16 equivalent.
*
* @param data The data to convert.
* @param len The length of the data.
*
* @return The base-16 string in the ASCII encoding. Must be
* g_free'd when no longer needed.
*
* @see purple_base16_decode()
*/
gchar *purple_base16_encode(const guchar *data, gsize len);
/**
* Converts an ASCII string of base-16 encoded data to
* the binary equivalent.
*
* @param str The base-16 string to convert to raw data.
* @param 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.
*
* @return The raw data. Must be g_free'd when no longer needed.
*
* @see purple_base16_encode()
*/
guchar *purple_base16_decode(const char *str, gsize *ret_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
*
* @param data The data to convert.
* @param len The length of the data.
*
* @return The base-16 string in the ASCII chunked encoding. Must be
* g_free'd when no longer needed.
*/
gchar *purple_base16_encode_chunked(const guchar *data, gsize len);
/*@}*/
/**************************************************************************/
/** @name Base64 Functions */
/**************************************************************************/
/*@{*/
/**
* Converts a chunk of binary data to its base-64 equivalent.
*
* @param data The data to convert.
* @param len The length of the data.
*
* @return The base-64 string in the ASCII encoding. Must be
* g_free'd when no longer needed.
*
* @see purple_base64_decode()
*/
gchar *purple_base64_encode(const guchar *data, gsize len);
/**
* Converts an ASCII string of base-64 encoded data to
* the binary equivalent.
*
* @param str The base-64 string to convert to raw data.
* @param 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.
*
* @return The raw data. Must be g_free'd when no longer needed.
*
* @see purple_base64_encode()
*/
guchar *purple_base64_decode(const char *str, gsize *ret_len);
/*@}*/
/**************************************************************************/
/** @name Quoted Printable Functions */
/**************************************************************************/
/*@{*/
/**
* 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.
*
* @param str The quoted printable ASCII string to convert to raw data.
* @param ret_len The length of the returned data.
*
* @return The readable string. Must be g_free'd when no longer needed.
*/
guchar *purple_quotedp_decode(const char *str, gsize *ret_len);
/*@}*/
/**************************************************************************/
/** @name MIME Functions */
/**************************************************************************/
/*@{*/
/**
* 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.
*
* @param str The ASCII string, possibly containing any number of
* encoded-word sections.
*
* @return The string, with any encoded-word sections decoded and
* converted to UTF-8. Must be g_free'd when no longer
* needed.
*/
char *purple_mime_decode_field(const char *str);
/*@}*/
/**************************************************************************/
/** @name Date/Time Functions */
/**************************************************************************/
/*@{*/
/**
* 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.
*
* @param format The format string, in UTF-8
* @param tm The time to format, or @c NULL to use the current local time
*
* @return The formatted time, in UTF-8.
*
* @note @a format is required to be in UTF-8. This differs from strftime(),
* where the format is provided in the locale charset.
*/
const char *purple_utf8_strftime(const char *format, const struct tm *tm);
/**
* Gets a string representation of the local timezone offset
*
* @param tm The time to get the timezone for
* @param 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.
*/
const char *purple_get_tzoff_str(const struct tm *tm, gboolean iso);
/**
* 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.
*
* @param tm The time to format, or @c NULL to use the current local time
*
* @return The date, formatted as per the user's settings.
*/
const char *purple_date_format_short(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.
*
* @param tm The time to format, or @c NULL to use the current local time
*
* @return The timestamp, formatted as per the user's settings.
*/
const char *purple_date_format_long(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.
*
* @param tm The time to format, or @c NULL to use the current local time
*
* @return The date and time, formatted as per the user's settings.
*/
const char *purple_date_format_full(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.
*
* @param tm The time to format, or @c NULL to use the current local time
*
* @return The time, formatted as per the user's settings.
*/
const char *purple_time_format(const struct tm *tm);
/**
* Builds a time_t from the supplied information.
*
* @param year The year.
* @param month The month.
* @param day The day.
* @param hour The hour.
* @param min The minute.
* @param sec The second.
*
* @return A time_t.
*/
time_t purple_time_build(int year, int month, int day, int hour,
int min, int sec);
/** Used by purple_str_to_time to indicate no timezone offset was
* specified in the timestamp string. */
#define PURPLE_NO_TZ_OFF -500000
/**
* Parses a timestamp in jabber, ISO8601, or MM/DD/YYYY format and returns
* a time_t.
*
* @param timestamp The timestamp
* @param utc Assume UTC if no timezone specified
* @param tm If not @c NULL, the caller can get a copy of the
* struct tm used to calculate the time_t return value.
* @param tz_off If not @c 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 @c PURPLE_NO_TZ_OFF indicates no
* offset was specified (which means that the local
* timezone was used in the calculation).
* @param rest If not @c NULL, the caller can get a pointer to the
* part of @a timestamp left over after parsing is
* completed, if it's not the end of @a timestamp.
*
* @return A time_t.
*/
time_t purple_str_to_time(const char *timestamp, gboolean utc,
struct tm *tm, long *tz_off, const char **rest);
/*@}*/
/**************************************************************************/
/** @name Markup Functions */
/**************************************************************************/
/*@{*/
/**
* 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
*/
gchar *purple_markup_escape_text(const gchar *text, gssize length);
/**
* 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.
*
* @param needle The name of the tag
* @param haystack The null-delimited string to search in
* @param start A pointer to the start of the tag if found
* @param end A pointer to the end of the tag if found
* @param attributes The attributes, if the tag was found. This should
* be freed with g_datalist_clear().
* @return TRUE if the tag was found
*/
gboolean purple_markup_find_tag(const char *needle, const char *haystack,
const char **start, const char **end,
GData **attributes);
/**
* 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.
*
* @param str The string to parse.
* @param len The size of str.
* @param user_info The destination PurpleNotifyUserInfo to which the new
* field info should be added.
* @param start_token The beginning token.
* @param skip The number of characters to skip after the
* start token.
* @param end_token The ending token.
* @param check_value The value that the last character must meet.
* @param no_value_token The token indicating no value is given.
* @param display_name The short descriptive name to display for this token.
* @param is_link TRUE if this should be a link, or FALSE otherwise.
* @param link_prefix The prefix for the link.
* @param format_cb A callback to format the value before adding it.
*
* @return TRUE if successful, or FALSE otherwise.
*/
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);
/**
* Converts HTML markup to XHTML.
*
* @param html The HTML markup.
* @param dest_xhtml The destination XHTML output.
* @param dest_plain The destination plain-text output.
*/
void purple_markup_html_to_xhtml(const char *html, char **dest_xhtml,
char **dest_plain);
/**
* Strips HTML tags from a string.
*
* @param str The string to strip HTML from.
*
* @return The new string without HTML. You must g_free this string
* when finished with it.
*/
char *purple_markup_strip_html(const char *str);
/**
* Adds the necessary HTML code to turn URIs into HTML links in a string.
*
* @param str The string to linkify.
*
* @return The new string with all URIs surrounded in standard
* HTML <a href="whatever"></a> tags. You must g_free this
* string when finished with it.
*/
char *purple_markup_linkify(const char *str);
/**
* Unescapes HTML entities to their literal characters in the text.
* For example "&" is replaced by '&' and so on. Also converts
* numerical entities (e.g. "&" is also '&').
*
* This function currently supports the following named entities:
* "&", "<", ">", "©", """, "®", "'"
*
* purple_unescape_html() is similar, but also converts "<br>" into "\n".
*
* @param text The string in which to unescape any HTML entities
*
* @return The text with HTML entities literalized. You must g_free
* this string when finished with it.
*
* @see purple_unescape_html()
* @since 2.7.0
*/
char *purple_unescape_text(const char *text);
/**
* Unescapes HTML entities to their literal characters and converts
* "<br>" to "\n". See purple_unescape_text() for more details.
*
* @param html The string in which to unescape any HTML entities
*
* @return The text with HTML entities literalized. You must g_free
* this string when finished with it.
*
* @see purple_unescape_text()
*/
char *purple_unescape_html(const char *html);
/**
* 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.
*
* @param str The input NUL terminated, HTML, UTF-8 (or ASCII) string.
* @param x The character offset into an unformatted version of str to
* begin at.
* @param y The character offset (into an unformatted vesion of str) of
* one past the last character to include in the slice.
*
* @return The HTML slice of string, with all formatting retained.
*/
char *purple_markup_slice(const char *str, guint x, guint y);
/**
* 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.
*
* @param tag The string starting a HTML tag.
* @return A string containing the name of the tag.
*/
char *purple_markup_get_tag_name(const char *tag);
/**
* Returns a constant string of the character representation of the HTML
* entity pointed to by @a text. For example, purple_markup_unescape_entity("&")
* will return "&". The @a text variable is expected to point to an '&',
* the first character of the entity. If given an unrecognized entity, the function
* returns @c 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.
*
* @param text A string containing an HTML entity.
* @param length If not @c NULL, the string length of the entity is stored in this location.
*
* @return A constant string containing the character representation of the given entity.
*/
const char * purple_markup_unescape_entity(const char *text, int *length);
/**
* Returns a newly allocated string containing the value of the CSS property specified
* in opt. The @a 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
* @c NULL.
*
* @param style A string containing the inline CSS text.
* @param opt The requested CSS property.
*
* @return The value of the requested CSS property.
*/
char * purple_markup_get_css_property(const gchar *style, const gchar *opt);
/**
* Check if the given HTML contains RTL text.
*
* @param html The HTML text.
*
* @return TRUE if the text contains RTL text, FALSE otherwise.
*
* @since 2.6.0
*/
gboolean purple_markup_is_rtl(const char *html);
/*@}*/
/**************************************************************************/
/** @name Path/Filename Functions */
/**************************************************************************/
/*@{*/
/**
* Returns the user's home directory.
*
* @return The user's home directory.
*
* @see purple_user_dir()
*/
const gchar *purple_home_dir(void);
/**
* Returns the purple settings directory in the user's home directory.
* This is usually ~/.purple
*
* @return The purple settings directory.
*
* @see purple_home_dir()
*/
const char *purple_user_dir(void);
/**
* Define a custom purple settings directory, overriding the default (user's home directory/.purple)
* @param dir The custom settings directory
*/
void purple_util_set_user_dir(const char *dir);
/**
* Builds a complete path from the root, making any directories along
* the path which do not already exist.
*
* @param path The path you wish to create. Note that it must start
* from the root or this function will fail.
* @param mode Unix-style permissions for this directory.
*
* @return 0 for success, nonzero on any error.
*/
int purple_build_dir(const char *path, int mode);
/**
* 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.
*
* @param filename The basename of the file to write in the purple_user_dir.
* @param data A null-terminated string of data to write.
* @param size The size of the data to save. If data is
* null-terminated you can pass in -1.
*
* @return TRUE if the file was written successfully. FALSE otherwise.
*/
gboolean purple_util_write_data_to_file(const char *filename, const char *data,
gssize size);
/**
* Write data to a file using the absolute path.
*
* This exists for Glib backwards compatibility reasons.
*
* @param filename_full Filename to write to
* @param data A null-terminated string of data to write.
* @param size The size of the data to save. If data is
* null-terminated you can pass in -1.
*
* @return 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 purple_util_write_data_to_file()
*
*/
gboolean
purple_util_write_data_to_file_absolute(const char *filename_full, const char *data, gssize size);
/**
* 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.)
*
* @param filename The basename of the file to open in the purple_user_dir.
* @param 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."
*
* @return 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.
*/
xmlnode *purple_util_read_xml_from_file(const char *filename,
const char *description);
/**
* 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 @a path with
* g_free().
*
* @param path The returned path to the temp file.
* @param binary Text or binary, for platforms where it matters.
*
* @return A file pointer to the temporary file, or @c NULL on failure.
*/
FILE *purple_mkstemp(char **path, gboolean binary);
/**
* Returns an extension corresponding to the image data's file type.
*
* @param data A pointer to the image data
* @param len The length of the image data
*
* @return The appropriate extension, or "icon" if unknown.
*/
const char *
purple_util_get_image_extension(gconstpointer data, size_t len);
/**
* Returns a SHA-1 hash string of the data passed in.
*/
char *purple_util_get_image_checksum(gconstpointer image_data, size_t image_len);
/**
* @return 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.
*/
char *purple_util_get_image_filename(gconstpointer image_data, size_t image_len);
/*@}*/
/**************************************************************************/
/** @name Environment Detection Functions */
/**************************************************************************/
/*@{*/
/**
* Checks if the given program name is valid and executable.
*
* @param program The file name of the application.
*
* @return TRUE if the program is runable.
*/
gboolean purple_program_is_valid(const char *program);
/**
* Check if running GNOME.
*
* @return TRUE if running GNOME, FALSE otherwise.
*/
gboolean purple_running_gnome(void);
/**
* Check if running KDE.
*
* @return TRUE if running KDE, FALSE otherwise.
*/
gboolean purple_running_kde(void);
/**
* Check if running OS X.
*
* @return TRUE if running OS X, FALSE otherwise.
*/
gboolean purple_running_osx(void);
/**
* Returns the IP address from a socket file descriptor.
*
* @param fd The socket file descriptor.
*
* @return The IP address, or @c NULL on error.
*/
char *purple_fd_get_ip(int fd);
/**
* Returns the address family of a socket.
*
* @param fd The socket file descriptor.
*
* @return The address family of the socket (AF_INET, AF_INET6, etc) or -1
* on error.
* @since 2.7.0
*/
int purple_socket_get_family(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).
*
* @param fd The socket file descriptor
* @return TRUE if a socket can speak IPv4.
* @since 2.7.0
*/
gboolean purple_socket_speaks_ipv4(int fd);
/*@}*/
/**************************************************************************/
/** @name String Functions */
/**************************************************************************/
/*@{*/
/**
* Tests two strings for equality.
*
* Unlike strcmp(), this function will not crash if one or both of the
* strings are @c NULL.
*
* @param left A string
* @param right A string to compare with left
*
* @return @c TRUE if the strings are the same, else @c FALSE.
*
* @since 2.6.0
*/
gboolean purple_strequal(const gchar *left, const gchar *right);
/**
* 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 <i>must</i>
* g_strdup() it. Also, calling normalize() twice in the same line
* will lead to problems.
*
* @param 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.
* @param str The string to normalize.
*
* @return A pointer to the normalized version stored in a static buffer.
*/
const char *purple_normalize(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.
*
* @param account The account the string belongs to.
* @param str The string to normalize.
*
* @return A pointer to the normalized version stored in a static buffer.
*/
const char *purple_normalize_nocase(const PurpleAccount *account, const char *str);
/**
* Compares two strings to see if the first contains the second as
* a proper prefix.
*
* @param s The string to check.
* @param p The prefix in question.
*
* @return TRUE if p is a prefix of s, otherwise FALSE.
*/
gboolean purple_str_has_prefix(const char *s, const char *p);
/**
* Compares two strings to see if the second is a proper suffix
* of the first.
*
* @param s The string to check.
* @param x The suffix in question.
*
* @return TRUE if x is a a suffix of s, otherwise FALSE.
*/
gboolean purple_str_has_suffix(const char *s, const char *x);
/**
* Duplicates a string and replaces all newline characters from the
* source string with HTML linebreaks.
*
* @param src The source string.
*
* @return The new string. Must be g_free'd by the caller.
*/
gchar *purple_strdup_withhtml(const gchar *src);
/**
* Ensures that all linefeeds have a matching carriage return.
*
* @param str The source string.
*
* @return The string with carriage returns.
*/
char *purple_str_add_cr(const char *str);
/**
* 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, '\n');
*
* @param str The string to strip characters from.
* @param thechar The character to strip from the given string.
*/
void purple_str_strip_char(char *str, char thechar);
/**
* Given a string, this replaces all instances of one character
* with another. This happens inline (the original string IS
* modified).
*
* @param string The string from which to replace stuff.
* @param delimiter The character you want replaced.
* @param replacement The character you want inserted in place
* of the delimiting character.
*/
void purple_util_chrreplace(char *string, char delimiter,
char replacement);
/**
* Given a string, this replaces one substring with another
* and returns a newly allocated string.
*
* @param string The string from which to replace stuff.
* @param delimiter The substring you want replaced.
* @param replacement The substring you want inserted in place
* of the delimiting substring.
*
* @return A new string, after performing the substitution.
* free this with g_free().
*/
gchar *purple_strreplace(const char *string, const char *delimiter,
const char *replacement);
/**
* Given a string, this replaces any utf-8 substrings in that string with
* the corresponding numerical character reference, and returns a newly
* allocated string.
*
* @param in The string which might contain utf-8 substrings
*
* @return A new string, with utf-8 replaced with numerical character
* references, free this with g_free()
*/
char *purple_utf8_ncr_encode(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.
*
* @param in The string which might contain numerical character references.
*
* @return A new string, with numerical character references
* replaced with actual utf-8, free this with g_free().
*/
char *purple_utf8_ncr_decode(const char *in);
/**
* Given a string, this replaces one substring with another
* ignoring case and returns a newly allocated string.
*
* @param string The string from which to replace stuff.
* @param delimiter The substring you want replaced.
* @param replacement The substring you want inserted in place
* of the delimiting substring.
*
* @return A new string, after performing the substitution.
* free this with g_free().
*/
gchar *purple_strcasereplace(const char *string, const char *delimiter,
const char *replacement);
/**
* This is like strstr, except that it ignores ASCII case in
* searching for the substring.
*
* @param haystack The string to search in.
* @param needle The substring to find.
*
* @return the location of the substring if found, or NULL if not
*/
const char *purple_strcasestr(const char *haystack, const char *needle);
/**
* Returns a string representing a filesize in the appropriate
* units (MB, KB, GB, etc.)
*
* @param size The size
*
* @return The string in units form. This must be freed.
*/
char *purple_str_size_to_units(size_t size);
/**
* Converts seconds into a human-readable form.
*
* @param sec The seconds.
*
* @return A human-readable form, containing days, hours, minutes, and
* seconds.
*/
char *purple_str_seconds_to_string(guint sec);
/**
* 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.
*
* @param binary A string of random data, possibly with embedded NULs
* and such.
* @param len The length in bytes of the input string. Must not be 0.
*
* @return A newly allocated ASCIIZ string.
*/
char *purple_str_binary_to_ascii(const unsigned char *binary, guint len);
/*@}*/
/**************************************************************************/
/** @name URI/URL Functions */
/**************************************************************************/
/*@{*/
void purple_got_protocol_handler_uri(const char *uri);
/**
* Parses a URL, returning its host, port, file path, username and password.
*
* The returned data must be freed.
*
* @param url The URL to parse.
* @param ret_host The returned host.
* @param ret_port The returned port.
* @param ret_path The returned path.
* @param ret_user The returned username.
* @param ret_passwd The returned password.
*/
gboolean purple_url_parse(const char *url, char **ret_host, int *ret_port,
char **ret_path, char **ret_user, char **ret_passwd);
/**
* This is the signature used for functions that act as the callback
* to purple_util_fetch_url() or purple_util_fetch_url_request().
*
* @param url_data The same value that was returned when you called
* purple_fetch_url() or purple_fetch_url_request().
* @param user_data The user data that your code passed into either
* purple_util_fetch_url() or purple_util_fetch_url_request().
* @param url_text This will be NULL on error. Otherwise this
* will contain the contents of the URL.
* @param len 0 on error, otherwise this is the length of buf.
* @param error_message If something went wrong then this will contain
* a descriptive error message, and buf will be
* NULL and len will be 0.
*/
typedef void (*PurpleUtilFetchUrlCallback)(PurpleUtilFetchUrlData *url_data, gpointer user_data, const gchar *url_text, gsize len, const gchar *error_message);
/**
* Fetches the data from a URL, and passes it to a callback function.
*
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param cb The callback function.
* @param data The user data to pass to the callback function.
*/
#define purple_util_fetch_url(url, full, user_agent, http11, cb, data) \
purple_util_fetch_url_request(url, full, user_agent, http11, NULL, \
FALSE, cb, data);
/**
* Fetches the data from a URL, and passes it to a callback function.
*
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param max_len The maximum number of bytes to retrieve (-1 for unlimited)
* @param cb The callback function.
* @param 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
*/
#define purple_util_fetch_url_len(url, full, user_agent, http11, max_len, cb, data) \
purple_util_fetch_url_request_len(url, full, user_agent, http11, NULL, \
FALSE, max_len, cb, data);
/**
* Fetches the data from a URL, and passes it to a callback function.
*
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param request A HTTP request to send to the server instead of the
* standard GET
* @param include_headers
* If TRUE, include the HTTP headers in the response.
* @param callback The callback function.
* @param data The user data to pass to the callback function.
*/
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.
*
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param request A HTTP request to send to the server instead of the
* standard GET
* @param include_headers
* If TRUE, include the HTTP headers in the response.
* @param max_len The maximum number of bytes to retrieve (-1 for unlimited)
* @param callback The callback function.
* @param data The user data to pass to the callback function.
* @deprecated In 3.0.0, this will go away.
*/
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.
*
* @param account The account for which the request is needed, or NULL.
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param request A HTTP request to send to the server instead of the
* standard GET
* @param include_headers
* If TRUE, include the HTTP headers in the response.
* @param max_len The maximum number of bytes to retrieve, or a negative
* number to use the default max of 512 KiB.
* @param callback The callback function.
* @param 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
*/
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.
*
* @param account The account for which the request is needed, or NULL.
* @param url The URL.
* @param full TRUE if this is the full URL, or FALSE if it's a
* partial URL.
* @param user_agent The user agent field to use, or NULL.
* @param http11 TRUE if HTTP/1.1 should be used to download the file.
* @param request A HTTP request to send to the server instead of the
* standard GET
* @param request_len
* Then length of the request being sent
* @param include_headers
* If TRUE, include the HTTP headers in the response.
* @param max_len The maximum number of bytes to retrieve, or a negative
* number to use the default max of 512 KiB.
* @param callback The callback function.
* @param 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
*/
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);
/**
* Cancel a pending URL request started with either
* purple_util_fetch_url_request() or purple_util_fetch_url().
*
* @param url_data The data returned when you initiated the URL fetch.
*/
void purple_util_fetch_url_cancel(PurpleUtilFetchUrlData *url_data);
/**
* Decodes a URL into a plain string.
*
* This will change hex codes and such to their ascii equivalents.
*
* @param str The string to translate.
*
* @return The resulting string.
*/
const char *purple_url_decode(const char *str);
/**
* Encodes a URL into an escaped string.
*
* This will change non-alphanumeric characters to hex codes.
*
* @param str The string to translate.
*
* @return The resulting string.
*/
const char *purple_url_encode(const char *str);
/**
* Checks if the given email address is syntactically valid.
*
* @param address The email address to validate.
*
* @return True if the email address is syntactically correct.
*/
gboolean purple_email_is_valid(const char *address);
/**
* Checks if the given IP address is a syntactically valid IPv4 address.
*
* @param ip The IP address to validate.
*
* @return 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.
*/
gboolean purple_ip_address_is_valid(const char *ip);
/**
* Checks if the given IP address is a syntactically valid IPv4 address.
*
* @param ip The IP address to validate.
*
* @return True if the IP address is syntactically correct.
* @since 2.6.0
*/
gboolean purple_ipv4_address_is_valid(const char *ip);
/**
* Checks if the given IP address is a syntactically valid IPv6 address.
*
* @param ip The IP address to validate.
*
* @return True if the IP address is syntactically correct.
* @since 2.6.0
*/
gboolean purple_ipv6_address_is_valid(const char *ip);
/**
* This function extracts a list of URIs from the a "text/uri-list"
* string. It was "borrowed" from gnome_uri_list_extract_uris
*
* @param uri_list An uri-list in the standard format.
*
* @return A GList containing strings allocated with g_malloc
* that have been splitted from uri-list.
*/
GList *purple_uri_list_extract_uris(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
*
* @param uri_list A uri-list in the standard format.
*
* @return 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.
*/
GList *purple_uri_list_extract_filenames(const gchar *uri_list);
/*@}*/
/**************************************************************************
* UTF8 String Functions
**************************************************************************/
/*@{*/
/**
* Attempts to convert a string to UTF-8 from an unknown encoding.
*
* This function checks the locale and tries sane defaults.
*
* @param str The source string.
*
* @return The UTF-8 string, or @c NULL if it could not be converted.
*/
gchar *purple_utf8_try_convert(const char *str);
/**
* Salvages the valid UTF-8 characters from a string, replacing any
* invalid characters with a filler character (currently hardcoded to
* '?').
*
* @param str The source string.
*
* @return A valid UTF-8 string.
*/
gchar *purple_utf8_salvage(const char *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.
*
* @param str A valid UTF-8 string.
*
* @return A newly allocated UTF-8 string without the unprintable characters.
* @since 2.6.0
*/
gchar *purple_utf8_strip_unprintables(const gchar *str);
/**
* 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().
*
* @param errnum The error code.
*
* @return The UTF-8 error message.
* @since 2.4.0
*/
G_CONST_RETURN gchar *purple_gai_strerror(gint errnum);
/**
* 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.
*
* @param a The first string.
* @param b The second string.
*
* @return -1 if @a is less than @a b.
* 0 if @a is equal to @a b.
* 1 if @a is greater than @a b.
*/
int purple_utf8_strcasecmp(const char *a, const char *b);
/**
* 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.
*
* @param haystack The string to search in.
* @param needle The substring to find.
*
* @return TRUE if haystack has the word, otherwise FALSE
*/
gboolean purple_utf8_has_word(const char *haystack, const char *needle);
/**
* 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.
*
* @param filestream The file stream (e.g. STDOUT or STDERR)
* @param message The message to print.
*/
void purple_print_utf8_to_console(FILE *filestream, char *message);
/**
* Checks for messages starting (post-HTML) with "/me ", including the space.
*
* @param message The message to check
* @param len The message length, or -1
*
* @return TRUE if it starts with "/me ", and it has been removed, otherwise
* FALSE
*/
gboolean purple_message_meify(char *message, gssize len);
/**
* Removes the underscore characters from a string used identify the mnemonic
* character.
*
* @param in The string to strip
*
* @return The stripped string
*/
char *purple_text_strip_mnemonic(const char *in);
/*@}*/
/**
* Adds 8 to something.
*
* Blame SimGuy.
*
* @param x The number to add 8 to.
*
* @return x + 8
*/
#define purple_add_eight(x) ((x)+8)
/**
* Does the reverse of purple_escape_filename
*
* This will change hex codes and such to their ascii equivalents.
*
* @param str The string to translate.
*
* @return The resulting string.
*/
const char *purple_unescape_filename(const char *str);
/**
* Escapes filesystem-unfriendly characters from a filename
*
* @param str The string to translate.
*
* @return The resulting string.
*/
const char *purple_escape_filename(const char *str);
/**
* 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.
*/
const char *_purple_oscar_convert(const char *act, const char *protocol);
/**
* 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.
*/
void purple_restore_default_signal_handlers(void);
/**
* Gets the host name of the machine. If it not possible to determine the
* host name, "localhost" is returned
*
* @constreturn The hostname
*/
const gchar *purple_get_host_name(void);
/**
* Returns a type 4 (random) UUID
*
* @return A UUID, caller is responsible for freeing it
* @since 2.7.0
*/
gchar *purple_uuid_random(void);
#ifdef __cplusplus
}
#endif
#endif /* _PURPLE_UTIL_H_ */
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