1 files changed, 251 insertions, 0 deletions
diff --git a/camel/string-utils.c b/camel/string-utils.c
new file mode 100644
index 0000000000..7cfd07e6d8
--- /dev/null
+++ b/camel/string-utils.c
@@ -0,0 +1,251 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* string-util : utilities for gchar* strings  */
+
+/* 
+ *
+ * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@inria.fr> .
+ *
+ * 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
+ */
+
+
+
+#include <config.h>
+#include "string-utils.h"
+#include "camel-log.h"
+
+
+
+gboolean
+string_equal_for_glist (gconstpointer v, gconstpointer v2)
+{
+  return (!strcmp ( ((const gchar *)v), ((const gchar*)v2))) == 0;
+}
+
+/**
+ * string_dichotomy:
+ * @sep : separator
+ * @prefix: pointer to be field by the prefix object
+ *   the prefix is not returned when the given pointer is NULL
+ * @suffix: pointer to be field by the suffix object
+ *   the suffix is not returned when the given pointer is NULL
+ *
+ * Return the strings before and/or after 
+ * the last occurence of the specified separator
+ *
+ * This routine returns the string before and/or after
+ * a character given as an argument. 
+ * if the separator is the last character, prefix and/or
+ * suffix is set to NULL and result is set to 'l'
+ * if the separator is not in the list, prefix and/or
+ * suffix is set to NULL and result is set to 'n'
+ * When the operation succedeed, the return value is 'o'
+ *
+ * @Return Value : result of the operation ('o', 'l' or 'n')
+ *
+ **/
+gchar
+string_dichotomy (const gchar *string, gchar sep, gchar **prefix, gchar **suffix,
+		    StringDichotomyOption options)
+{
+	gchar *tmp_str;
+	gint sep_pos, first, last, len;
+	
+	g_assert (string);
+	CAMEL_LOG_FULL_DEBUG (\
+		  "string_dichotomy:: string=\"%s\"\n\tseparator=\"%c\" \n\tprefix=%p \n\tsuffix=%p \n\toptions=%ld\n",\
+		  string, sep, prefix, suffix, options);
+	len = strlen (string);
+	if (!len) {
+		if (prefix)
+			*prefix=NULL;
+		if (suffix)
+			*suffix=NULL;
+		CAMEL_LOG_FULL_DEBUG ("string_dichotomy:: input string is empty\n");
+		return 'n';
+	}
+	first = 0;
+	last = len-1;
+	
+	if ( (options & STRING_DICHOTOMY_STRIP_LEADING ) && (string[first] == sep) )
+	    do {first++;} while ( (first<len) && (string[first] == sep) );
+	
+	if (options & STRING_DICHOTOMY_STRIP_TRAILING )
+		while ((string[last] == sep) && (last>first))
+			last--;
+	
+	if (first==last) {
+		if (prefix) *prefix=NULL;
+		if (suffix) *suffix=NULL;
+		CAMEL_LOG_FULL_DEBUG ("string_dichotomy: after stripping, string is empty\n");
+		return 'n';
+	}
+	
+	if (options & STRING_DICHOTOMY_RIGHT_DIR) {
+		sep_pos = last;
+		while ((sep_pos>=first) && (string[sep_pos]!=sep)) {
+			sep_pos--;
+		}
+	} else {
+		sep_pos = first;
+		while ((sep_pos<=last) && (string[sep_pos]!=sep)) {
+			sep_pos++;
+		}
+		
+	}
+	
+	if ( (sep_pos<first) || (sep_pos>last) ) 
+		{
+			if (suffix) *suffix=NULL;
+			if (prefix) *prefix=NULL;
+			CAMEL_LOG_FULL_DEBUG ("string_dichotomy: separator not found\n");
+			return 'n';
+		}
+	
+	/* if we have stripped trailing separators, we should */
+	/* never enter here */
+	if (sep_pos==last) 
+		{
+			if (suffix) *suffix=NULL;
+			if (prefix) *prefix=NULL;
+			CAMEL_LOG_FULL_DEBUG ("string_dichotomy: separator is last character\n");
+			return 'l';
+		}
+	/* if we have stripped leading separators, we should */
+	/* never enter here */
+	if (sep_pos==first)
+		{
+			if (suffix) *suffix=NULL;
+			if (prefix) *prefix=NULL;
+			CAMEL_LOG_FULL_DEBUG ("string_dichotomy: separator is first character\n");
+			return 'l';
+		}
+	CAMEL_LOG_FULL_DEBUG ("string_dichotomy: separator found at :%d\n", sep_pos);
+	if (prefix) { /* return the prefix */
+		*prefix = g_strndup(string+first,sep_pos-first);
+		CAMEL_LOG_FULL_DEBUG ( "string_dichotomy:: prefix:\"%s\"\n", *prefix);
+	}
+	if (suffix) { /* return the suffix */
+		*suffix = g_strndup(string+sep_pos+1, last-sep_pos);
+		CAMEL_LOG_FULL_DEBUG ( "string_dichotomy:: suffix:\"%s\"\n", *suffix);
+	}
+	 
+	return 'o';
+}
+
+
+
+
+
+
+/* utility func : frees a gchar element in a GList */
+static void 
+__string_list_free_string (gpointer data, gpointer user_data)
+{
+	gchar *string = (gchar *)data;
+	g_free(string);
+}
+
+
+void 
+string_list_free (GList *string_list)
+{
+	g_list_foreach (string_list, __string_list_free_string, NULL);
+	g_list_free (string_list);
+}
+
+
+
+
+
+
+GList *
+string_split (const gchar *string, char sep, const gchar *trim_chars, StringTrimOption trim_options)
+{
+	GList *result = NULL;
+	gint first, last, pos;
+	gchar *new_string;
+
+	g_assert (string);
+	
+	first = 0;
+	last = strlen(string) - 1;
+	
+	/* strip leading and trailing separators */
+	while ( (first<=last) && (string[first]==sep) )
+		first++;
+	while ( (first<=last) && (string[last]==sep) )
+		last--;
+
+	
+	CAMEL_LOG_FULL_DEBUG ("string_split:: trim options: %d\n", trim_options);
+
+	while (first<=last)  {
+		pos = first;
+		/* find next separator */
+		while ((pos<=last) && (string[pos]!=sep)) pos++;
+		if (first != pos) {
+			new_string = g_strndup (string+first, pos-first);
+			/* could do trimming in line to speed up this code */
+			if (trim_chars) string_trim (new_string, trim_chars, trim_options);
+			result = g_list_append (result, new_string);
+		}	
+		first = pos + 1;
+	}
+
+	return result;
+}
+
+
+void 
+string_trim (gchar *string, const gchar *trim_chars, StringTrimOption options)
+{
+	gint first_ok;
+	gint last_ok;
+	guint length;
+
+	CAMEL_LOG_FULL_DEBUG ("string-utils:: Entering string_trim::\n");
+	CAMEL_LOG_FULL_DEBUG ("string_trim:: trim_chars:\"%s\"", trim_chars);
+	CAMEL_LOG_FULL_DEBUG ("string_trim:: trim_options:%d\n", options);
+
+	g_return_if_fail (string);
+	length = strlen (string);
+	g_return_if_fail (length > 0);
+	
+	first_ok = 0;
+	last_ok = length - 1;
+
+	if (options & STRING_TRIM_STRIP_LEADING)
+		while  ( (first_ok <= last_ok) && (strchr (trim_chars, string[first_ok])!=NULL) )
+			first_ok++;
+	
+	if (options & STRING_TRIM_STRIP_TRAILING)
+		while  ( (first_ok <= last_ok) && (strchr (trim_chars, string[last_ok])!=NULL) )
+			last_ok--;
+	CAMEL_LOG_FULL_DEBUG ("string_trim::\n\t\"%s\":first ok:%d last_ok:%d\n",
+		   string, first_ok, last_ok);
+	
+	if (first_ok > 0)
+		memmove (string, string+first_ok, last_ok - first_ok +2);
+	
+}
+
+
+
+
+
+
+