Method

GLibRegexmatch_full

Declaration

gboolean
g_regex_match_full (
  const GRegex* regex,
  const gchar* string,
  gssize string_len,
  gint start_position,
  GRegexMatchFlags match_options,
  GMatchInfo** match_info,
  GError** error
)

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.

Setting start_position differs from just passing over a shortened string and setting G_REGEX_MATCH_NOTBOL in the case of a pattern that begins with any kind of lookbehind assertion, such as “\b”.

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.

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.

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;
  GError *error = NULL;
  
  regex = g_regex_new ("[A-Z]+", 0, 0, NULL);
  g_regex_match_full (regex, string, -1, 0, 0, &match_info, &error);
  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, &error);
    }
  g_match_info_free (match_info);
  g_regex_unref (regex);
  if (error != NULL)
    {
      g_printerr ("Error while matching: %s\n", error->message);
      g_error_free (error);
    }
}
Available since:2.14

Parameters

string

Type: An array of gchar

The string to scan for matches.

The length of the array is specified in the string_len argument.
The data is owned by the caller of the function.
Each element is a NUL terminated UTF-8 string.
string_len

Type: gssize

The length of string, in bytes, or -1 if string is nul-terminated.

start_position

Type: gint

Starting index of the string to match, in bytes.

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.
error

Type: GError **

The return location for a GError*, or NULL.

Return value

Type: gboolean

TRUE is the string matched, FALSE otherwise.