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C/C++ Source or Header | 2007-05-04 | 38.0 KB | 1,146 lines

/** * @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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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> #include "account.h" #include "xmlnode.h" #ifdef __cplusplus extern "C" { #endif typedef struct _PurpleUtilFetchUrlData PurpleUtilFetchUrlData; typedef struct _PurpleMenuAction { char *label; PurpleCallback callback; gpointer data; GList *children; } PurpleMenuAction; 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. */ typedef struct _PurpleKeyValuePair { gchar *key; void *value; } PurpleKeyValuePair; /** * 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); /**************************************************************************/ /** @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); /*@}*/ /**************************************************************************/ /** @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 * e-mails 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); /** * 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 */ /**************************************************************************/ /*@{*/ /** * 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. See protocols/msn/msn.c and * protocols/yahoo/yahoo_profile.c for example usage. * * @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. This must be freed. */ 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 linkified text. */ char *purple_markup_linkify(const char *str); /** * Unescapes HTML entities to their literal characters. * For example "&" is replaced by '&' and so on. * Actually only "&", """, "<" and ">" are currently * supported. * * @param html The string in which to unescape any HTML entities * * @return the text with HTML entities literalized */ 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); /*@}*/ /**************************************************************************/ /** @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, size_t 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); /*@}*/ /**************************************************************************/ /** @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); /*@}*/ /**************************************************************************/ /** @name String Functions */ /**************************************************************************/ /*@{*/ /** * 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 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); /** * 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); /** * 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); /** * Compares two UTF-8 strings case-insensitively. This string 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 with "/me " * * @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, size_t 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. */ 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); #ifdef __cplusplus } #endif #endif /* _PURPLE_UTIL_H_ */