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-rw-r--r--camel/gmime-content-field.c370
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diff --git a/camel/gmime-content-field.c b/camel/gmime-content-field.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* mime-content_field.c : mime content type field utilities */
-
-/*
- *
- * Author :
- * Bertrand Guiheneuf <Bertrand.Guiheneuf@aful.org>
- *
- * Copyright 1999 International GNOME Support (http://www.gnome-support.com) .
- *
- * 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 "gmime-content-field.h"
-#include "string-utils.h"
-#include "camel-log.h"
-#include <string.h>
-
-
-/**
- * gmime_content_field_new: Creates a new GMimeContentField object
- * @type: mime type
- * @subtype: mime subtype
- *
- * Creates a GMimeContentField object and initialize it with
- * a mime type and a mime subtype. For example,
- * gmime_content_field_new ("application", "postcript");
- * will create a content field with complete mime type
- * "application/postscript"
- *
- * Return value: The newly created GMimeContentField object
- **/
-GMimeContentField *
-gmime_content_field_new (const gchar *type, const gchar *subtype)
-{
- GMimeContentField *ctf;
-
- ctf = g_new (GMimeContentField, 1);
- ctf->type = g_strdup (type);
- ctf->subtype = g_strdup (subtype);
- ctf->parameters = g_hash_table_new (g_str_hash, g_str_equal);
- ctf->ref = 1;
-
- return ctf;
-}
-
-
-static void
-_free_parameter (gpointer name, gpointer value, gpointer user_data)
-{
- g_free (name);
- g_free (value);
-}
-
-/**
- * gmime_content_field_free: free a GMimeContentField object
- * @content_field: GMimeContentField object
- *
- * This method destroys the object and should be used very carefully.
- * Use gmime_content_field_unref instead.
- *
- **/
-void
-gmime_content_field_free (GMimeContentField *content_field)
-{
- if (!content_field) return;
-
- g_hash_table_foreach (content_field->parameters, _free_parameter, NULL);
- g_free (content_field->type);
- g_free (content_field->subtype);
- g_hash_table_destroy (content_field->parameters);
- g_free (content_field);
-}
-
-/**
- * gmime_content_field_ref: add a reference to a GMimeContentField object
- * @content_field: GMimeContentField object
- *
- * Tell a GMimeContentField object that something holds a reference
- * on him. This, coupled with the corresponding
- * gmime_content_field_unref() method allow several
- * objects to use the same GMimeContentField object.
- **/
-void
-gmime_content_field_ref (GMimeContentField *content_field)
-{
- content_field->ref += 1;
-}
-
-/**
- * gmime_content_field_unref: remove a reference to a GMimeContentField object
- * @content_field: GMimeContentField object
- *
- * Tell a GMimeContentField object that something which
- * was holding a reference to him does not need it anymore.
- * When no more reference exist, the GMimeContentField object
- * is freed using gmime_content_field_free().
- *
- **/
-void
-gmime_content_field_unref (GMimeContentField *content_field)
-{
- if (!content_field) return;
-
- content_field->ref -= 1;
- if (content_field->ref <= 0)
- gmime_content_field_free (content_field);
-}
-
-
-
-/**
- * gmime_content_field_set_parameter: set a parameter for a GMimeContentField object
- * @content_field: content field
- * @attribute: parameter name
- * @value: paramteter value
- *
- * set a parameter (called attribute in RFC 2045) of a content field. Meaningfull
- * or valid parameters name depend on the content type object. For example,
- * gmime_content_field_set_parameter (cf, "charset", "us-ascii");
- * will make sense for a "text/plain" content field but not for a
- * "image/gif". This routine does not check parameter validity.
- **/
-void
-gmime_content_field_set_parameter (GMimeContentField *content_field, const gchar *attribute, const gchar *value)
-{
- gboolean attribute_exists;
- gchar *old_attribute;
- gchar *old_value;
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField:: Entering set_parameter\n");
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField:: set_parameter content_field=%p name=%s, value=%s\n", content_field, attribute, value);
- attribute_exists = g_hash_table_lookup_extended (content_field->parameters,
- attribute,
- (gpointer *) &old_attribute,
- (gpointer *) &old_value);
- /** CHECK THAT : is normal to free pointers before insertion ? **/
- if (attribute_exists) {
- g_free (old_value);
- g_free (old_attribute);
- }
-
- g_hash_table_insert (content_field->parameters, g_strdup (attribute), g_strdup (value));
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField:: Leaving set_parameter\n");
-}
-
-
-/**
- * _print_parameter: print a parameter/value pair to a stream as described in RFC 2045
- * @name: name of the parameter
- * @value: value of the parameter
- * @user_data: CamelStream object to write the text to.
- *
- *
- **/
-static void
-_print_parameter (gpointer name, gpointer value, gpointer user_data)
-{
- CamelStream *stream = (CamelStream *)user_data;
-
- camel_stream_write_strings (stream,
- "; \n ",
- (gchar *)name,
- "=",
- (gchar *)value,
- NULL);
-
-}
-
-/**
- * gmime_content_field_write_to_stream: write a mime content type to a stream
- * @content_field: content type object
- * @stream: the stream
- *
- *
- **/
-void
-gmime_content_field_write_to_stream (GMimeContentField *content_field, CamelStream *stream)
-{
- if (!content_field) return;
-
- g_assert (stream);
- if (content_field->type) {
- camel_stream_write_strings (stream, "Content-Type: ", content_field->type, NULL);
- if (content_field->subtype) {
- camel_stream_write_strings (stream, "/", content_field->subtype, NULL);
- }
- /* print all parameters */
- g_hash_table_foreach (content_field->parameters, _print_parameter, stream);
- camel_stream_write_string (stream, "\n");
- } else CAMEL_LOG_FULL_DEBUG ("GMimeContentField::write_to_stream no mime type found\n");
-}
-
-/**
- * gmime_content_field_get_mime_type: return the mime type of the content field object
- * @content_field: content field object
- *
- * A RFC 2045 content type field contains the mime type in the
- * form "type/subtype" (example : "application/postscript") and some
- * parameters (attribute/value pairs). This routine returns the mime type
- * in a gchar object.
- *
- * Return value: the mime type in the form "type/subtype" or NULL if not defined.
- **/
-gchar *
-gmime_content_field_get_mime_type (GMimeContentField *content_field)
-{
- gchar *mime_type;
-
- if (!content_field->type) return NULL;
-
- if (content_field->subtype)
- mime_type = g_strdup_printf ("%s/%s", content_field->type, content_field->subtype);
- else
- mime_type = g_strdup (content_field->type);
- return mime_type;
-}
-
-static void
-___debug_print_parameter (gpointer name, gpointer value, gpointer user_data)
-{
-
- printf ("****** parameter \"%s\"=\"%s\"\n", (gchar *)name, (gchar *)value);
-
-}
-
-/**
- * gmime_content_field_get_parameter: return the value of a mime type parameter
- * @content_field: content field object
- * @name: name of the parameter
- *
- * Returns the value of a parameter contained in the content field
- * object. The content type is formed of a mime type, a mime subtype,
- * and a parameter list. Each parameter is a name/value pair. This
- * routine returns the value assiciated to a given name.
- * When the parameter does not exist, NULL is returned.
- *
- * Return value: parameter value, or NULL if not found.
- **/
-const gchar *
-gmime_content_field_get_parameter (GMimeContentField *content_field, const gchar *name)
-{
- const gchar *parameter;
- const gchar *old_name;
- gboolean parameter_exists;
-
- CAMEL_LOG_FULL_DEBUG ("Entering GMimeContentField::get_parameter content_field =%p\n", content_field);
- g_assert (content_field->parameters);
- g_assert (name);
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField::get_parameter looking for parameter \"%s\"\n", name);
- /* parameter = (const gchar *)g_hash_table_lookup (content_field->parameters, name); */
- parameter_exists = g_hash_table_lookup_extended (content_field->parameters,
- name,
- (gpointer *) &old_name,
- (gpointer *) &parameter);
- if (!parameter_exists) {
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField::get_parameter, parameter not found\n");
- g_hash_table_foreach (content_field->parameters, ___debug_print_parameter, NULL);
- return NULL;
- }
- CAMEL_LOG_FULL_DEBUG ("Leaving GMimeContentField::get_parameter\n");
- return parameter;
-}
-
-
-
-
-/**
- * gmime_content_field_construct_from_string: construct a ContentType object by parsing a string.
- *
- * @content_field: content type object to construct
- * @string: string containing the content type field
- *
- * Parse a string containing a content type field as defined in
- * RFC 2045, and construct the corresponding ContentType object.
- * The string is not modified and not used in the ContentType
- * object. It can and must be freed by the calling part.
- **/
-void
-gmime_content_field_construct_from_string (GMimeContentField *content_field, const gchar *string)
-{
- gint first, len;
- gchar *str;
- gint i=0;
- gchar *type, *subtype;
- gchar *param_name, *param_value;
- gboolean param_end;
-
- CAMEL_LOG_TRACE ( "GMimeContentField::construct_from_string, entering\n");
- g_assert (string);
- g_assert (content_field);
-
- g_free (content_field->type);
- g_free (content_field->subtype);
-
-
- first = 0;
- len = strlen (string);
- if (!len) return;
- CAMEL_LOG_FULL_DEBUG ("GMimeContentField::construct_from_string, All checks done\n");
-
- /* find the type */
- while ( (i<len) && (!strchr ("/;", string[i])) ) i++;
-
- if (i == 0) return;
-
- type = g_strndup (string, i);
- string_trim (type, " \t", STRING_TRIM_STRIP_TRAILING | STRING_TRIM_STRIP_LEADING);
- content_field->type = type;
- CAMEL_LOG_TRACE ( "GMimeContentField::construct_from_string, Found mime type : \"%s\"\n", type);
- if (i >= len-1) {
- content_field->subtype = NULL;
- return;
- }
-
- first = i+1;
- /* find the subtype, if any */
- if (string[i++] == '/') {
- while ( (i<len) && (string[i] != ';') ) i++;
- if (i != first) {
- subtype = g_strndup (string+first, i-first);
- string_trim (subtype, " \t", STRING_TRIM_STRIP_TRAILING | STRING_TRIM_STRIP_LEADING);
- content_field->subtype = subtype;
- CAMEL_LOG_TRACE ( "GMimeContentField::construct_from_string, Found mime subtype: \"%s\"\n", subtype);
- if (i >= len-1) return;
- }
- }
- first = i+1;
-
- /* parse parameters list */
- param_end = FALSE;
- do {
- while ( (i<len) && (string[i] != '=') ) i++;
- if ((i == len) || (i==first)) param_end = TRUE;
- else {
- /* we have found parameter name */
- param_name = g_strndup (string+first, i-first);
- string_trim (param_name, " ", STRING_TRIM_STRIP_TRAILING | STRING_TRIM_STRIP_LEADING);
- i++;
- first = i;
- /* Let's find parameter value */
- while ( (i<len) && (string[i] != ';') ) i++;
- if (i != first) param_value = g_strndup (string+first, i-first);
- else param_value = g_strdup ("");
- CAMEL_LOG_TRACE ( "GMimeContentField::construct_from_string, Found mime parameter \"%s\"=\"%s\"\n", param_name, param_value);
- string_trim (param_value, " \t", STRING_TRIM_STRIP_TRAILING | STRING_TRIM_STRIP_LEADING);
- gmime_content_field_set_parameter (content_field, param_name, param_value);
- g_free (param_name);
- g_free (param_value);
- i++;
- first = i;
- }
- } while ((!param_end) && (first < len));
-
-
-}
-