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authorbertrand <bertrand@helixcode.com>2000-01-14 06:53:06 +0800
committerBertrand Guiheneuf <bertrand@src.gnome.org>2000-01-14 06:53:06 +0800
commitf21a1a70bdcdf055e889a3ab736d76153ca2f760 (patch)
tree64f229848c7dd959530cab43329c200165b11cc4 /camel/providers
parentf5347f59ff008ebc53f456cfcd4b8c58dead29c5 (diff)
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eof is true when no more chars are available, not when we've read the
2000-01-13 bertrand <bertrand@helixcode.com> * camel/providers/mbox/camel-mbox-parser.c (read_next_buffer_chunk): eof is true when no more chars are available, not when we've read the entire file. (initialize_buffer): ditto. (read_message_begining): documented. (read_header): ditto. (new_message_detected): ditto. (advance_n_chars): ditto. (goto_next_char): ditto. (read_next_buffer_chunk): ditto. (initialize_buffer): ditto. (parser_free): ditto. (new_parser): ditto. More parser decoding and clean-ups. Documented all the static routines properly. svn path=/trunk/; revision=1567
Diffstat (limited to 'camel/providers')
-rw-r--r--camel/providers/mbox/camel-mbox-parser.c123
1 files changed, 104 insertions, 19 deletions
diff --git a/camel/providers/mbox/camel-mbox-parser.c b/camel/providers/mbox/camel-mbox-parser.c
index 1e9b2abe3d..2509a5a49a 100644
--- a/camel/providers/mbox/camel-mbox-parser.c
+++ b/camel/providers/mbox/camel-mbox-parser.c
@@ -106,6 +106,16 @@ clear_message_info (CamelMboxParserMessageInfo *preparsing_info)
+/**
+ * new_parser: create a new parser object
+ * @fd: file descriptor opened on the mbox file
+ * @message_delimiter: the string that announce the start of a new message.
+ *
+ * Create a new parser object. This object is the place where are
+ * stored all the information concerning the parsing process.
+ *
+ * Return value: The newly created parser object.
+ **/
static CamelMboxPreParser *
new_parser (int fd,
const gchar *message_delimiter)
@@ -134,10 +144,18 @@ new_parser (int fd,
+/**
+ * parser_free: free the parser object
+ * @parser: the parser objet to free.
+ *
+ * it is important to notice that all structures allocated
+ * in new_parser () are freed ** EXCEPT ** the message
+ * information array, i.e. the preparsed_messages
+ * field.
+ **/
void
parser_free (CamelMboxPreParser *parser)
{
-
g_free (parser->buffer);
g_free (parser->message_delimiter);
g_string_free (parser->tmp_string, TRUE);
@@ -149,7 +167,14 @@ parser_free (CamelMboxPreParser *parser)
/* ** handle exceptions here */
-/* read the first chunk of data in the buffer */
+/**
+ * initialize_buffer: read the first chunk of data in the buffer
+ * @parser: parser object to fill
+ * @first_position: position to start the read at
+ *
+ * read the first chunk of data from the mbox file.
+ *
+ **/
static void
initialize_buffer (CamelMboxPreParser *parser,
guint first_position)
@@ -177,7 +202,8 @@ initialize_buffer (CamelMboxPreParser *parser,
/* ** check for an error here */
parser->last_position = buf_nb_read;
- if (buf_nb_read < (MBOX_PARSER_BUF_SIZE - parser->left_chunk_size))
+
+ if (buf_nb_read == 0)
parser->eof =TRUE;
parser->current_position = parser->left_chunk_size;
@@ -186,13 +212,24 @@ initialize_buffer (CamelMboxPreParser *parser,
-/* read next data in the mbox file */
+/**
+ * read_next_buffer_chunk: read the next chunk of data in the mbox file
+ * @parser: parser object
+ *
+ * read the next chunk of data in the mbox file.
+ * Routine copies the last part of the buffer at
+ * the begining are concatenate the read data to
+ * it. This allows strcmp of keywords in the buffer,
+ * until the last postion. That means you can
+ * do a strcmp (buffer, keyword) for any of the
+ * keyword defined at the begining of this file.
+ *
+ **/
static void
read_next_buffer_chunk (CamelMboxPreParser *parser)
{
gint buf_nb_read;
-
g_assert (parser);
/* read the next chunk of data in the folder file : */
@@ -210,9 +247,9 @@ read_next_buffer_chunk (CamelMboxPreParser *parser)
} while ((buf_nb_read == -1) && (errno == EINTR));
/* ** check for an error here */
-
parser->last_position = buf_nb_read;
- if (buf_nb_read < (MBOX_PARSER_BUF_SIZE - parser->left_chunk_size))
+
+ if (buf_nb_read == 0)
parser->eof =TRUE;
parser->current_position = 0;
@@ -221,7 +258,15 @@ read_next_buffer_chunk (CamelMboxPreParser *parser)
-/* read next char in the buffer */
+/**
+ * goto_next_char: go one postion forward in the buffer
+ * @parser: parser object
+ *
+ * goto one position forward in the buffer. If necessary,
+ * read the next chunk of data in the file, possibly
+ * raising the parser->eof flag.
+ *
+ **/
static void
goto_next_char (CamelMboxPreParser *parser)
{
@@ -238,7 +283,13 @@ goto_next_char (CamelMboxPreParser *parser)
-/* advance n_chars in the buffer */
+
+/**
+ * advance_n_chars: go n positions forward in the buffer.
+ * @parser: parser object
+ * @n: number of characters to advance.
+ *
+ **/
static void
advance_n_chars (CamelMboxPreParser *parser, guint n)
{
@@ -271,6 +322,17 @@ advance_n_chars (CamelMboxPreParser *parser, guint n)
store the previous message information and
clean the temporary structure used to store
the informations */
+
+
+/**
+ * new_message_detected: routine to call when a new message has been detected
+ * @parser: parser object.
+ *
+ * this routine must be called when the keyword determining the
+ * begining of a new message has been detected. It pushes the
+ * information fetched for the last message into the message information
+ * array. Also, it gets the parser to the end of the line.
+ **/
static void
new_message_detected (CamelMboxPreParser *parser)
{
@@ -291,12 +353,13 @@ new_message_detected (CamelMboxPreParser *parser)
/* go to the end of the line */
do {
+
c = parser->buffer[parser->current_position];
goto_next_char (parser);
- //printf ("%c", c);
+
} while (c != '\n');
- //printf ("\n");
+ /* save message position in the message information structure */
(parser->current_message_info).message_position = parser->real_position;
parser->is_pending_message = TRUE;
@@ -308,10 +371,25 @@ new_message_detected (CamelMboxPreParser *parser)
-/* read a header value and put it in the string pointer
- to by header_content. This routine stops on a
- the first character after the last newline of the
- header content.
+
+/**
+ * read_header: read the header content contained after the current position.
+ * @parser: the parser object.
+ * @header_content: a pointer on a (char *) variable to feed with the obtained header string.
+ *
+ * This routine must be called when the parser has detected a header
+ * and it wants the header content to be stored. The parser current position
+ * must EXACTELY be located at the begining of the header content line.
+ * For example, if the file contains the line :
+ * from:Bertrand Guiheneuf <bertrand@helixcode.com>
+ *
+ * When this routine is called, the parser must be located
+ * on the "B" of "Bertrand".
+ *
+ * When this routine returns, the parser is located just
+ * after the "\n" at the end of the header content.
+ *
+ **/
*/
static void
read_header (CamelMboxPreParser *parser, gchar **header_content)
@@ -377,10 +455,17 @@ read_header (CamelMboxPreParser *parser, gchar **header_content)
-/* read the begining of the message and put it in the message
- summary field. If we the search ended on a newline, returns
- %TRUE, else returns %FALSE
-*/
+
+/**
+ * read_message_begining: read the first characters of a message body
+ * @parser: parser object
+ * @message_summary: a pointer on a (gchar *) variable where the obtained string will be stored.
+ *
+ * Read the first lines of a message. When calling this routine, the
+ * parser must be located at the begining of the message body.
+ *
+ * Return value: if the parsing inside this routine last read a newline, then %TRUE is returned, otherwise %FALSE is returned
+ **/
static gboolean
read_message_begining (CamelMboxPreParser *parser, gchar **message_summary)
{