Method

GLibRegexmatch

Declaration

gboolean
g_regex_match (
  const GRegex* regex,
  const gchar* string,
  GRegexMatchFlags match_options,
  GMatchInfo** match_info
)

Description

Scans for a match in string for the pattern in regex. The match_options are combined with the match options specified when the regex structure was created, letting you have more flexibility in reusing GRegex structures.

Unless G_REGEX_RAW is specified in the options, string must be valid UTF-8.

A GMatchInfo structure, used to get information on the match, is stored in match_info if not NULL. Note that if match_info is not NULL then it is created even if the function returns FALSE, i.e. you must free it regardless if regular expression actually matched.

To retrieve all the non-overlapping matches of the pattern in string you can use g_match_info_next().

static void
print_uppercase_words (const gchar *string)
{
  // Print all uppercase-only words.
  GRegex *regex;
  GMatchInfo *match_info;
 
  regex = g_regex_new ("[A-Z]+", 0, 0, NULL);
  g_regex_match (regex, string, 0, &match_info);
  while (g_match_info_matches (match_info))
    {
      gchar *word = g_match_info_fetch (match_info, 0);
      g_print ("Found: %s\n", word);
      g_free (word);
      g_match_info_next (match_info, NULL);
    }
  g_match_info_free (match_info);
  g_regex_unref (regex);
}

string is not copied and is used in GMatchInfo internally. If you use any GMatchInfo method (except g_match_info_free()) after freeing or modifying string then the behaviour is undefined.

Available since:2.14

Parameters

string

Type: const gchar*

The string to scan for matches.

The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.
match_options

Type: GRegexMatchFlags

Match options.

match_info

Type: GMatchInfo

Pointer to location where to store the GMatchInfo, or NULL if you do not need it.

The argument will be set by the function.
The argument can be NULL.
The instance takes ownership of the data, and is responsible for freeing it.

Return value

Type: gboolean

TRUE is the string matched, FALSE otherwise.