diff options
Diffstat (limited to 'camel/providers/nntp/camel-nntp-newsrc.c')
| -rw-r--r-- | camel/providers/nntp/camel-nntp-newsrc.c | 645 |
1 files changed, 0 insertions, 645 deletions
diff --git a/camel/providers/nntp/camel-nntp-newsrc.c b/camel/providers/nntp/camel-nntp-newsrc.c deleted file mode 100644 index d0b56222cf..0000000000 --- a/camel/providers/nntp/camel-nntp-newsrc.c +++ /dev/null @@ -1,645 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* camel-nntp-newsrc.c - .newsrc parsing/regurgitating code */ -/* - * - * Copyright (C) 2000 Helix Code, Inc. <toshok@helixcode.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 <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <glib.h> -#include <fcntl.h> -#include <unistd.h> -#include <errno.h> -#include "camel-nntp-newsrc.h" -#include <camel/camel-folder-summary.h> - -#ifdef ENABLE_THREADS -#include <pthread.h> - -#define NEWSRC_LOCK(f, l) (g_mutex_lock(((CamelNNTPNewsrc *)f)->l)) -#define NEWSRC_UNLOCK(f, l) (g_mutex_unlock(((CamelNNTPNewsrc *)f)->l)) -#else -#define NEWSRC_LOCK(f, l) -#define NEWSRC_UNLOCK(f, l) -#endif - -typedef struct { - guint low; - guint high; -} ArticleRange; - -typedef struct { - char *name; - GArray *ranges; - gboolean subscribed; -} NewsrcGroup; - -struct CamelNNTPNewsrc { - gchar *filename; - GHashTable *groups; - gboolean dirty; -#ifdef ENABLE_THREADS - GMutex *lock; -#endif -} ; - - -static NewsrcGroup * -camel_nntp_newsrc_group_add (CamelNNTPNewsrc *newsrc, const char *group_name, gboolean subscribed) -{ - NewsrcGroup *new_group = g_malloc(sizeof(NewsrcGroup)); - - new_group->name = g_strdup(group_name); - new_group->subscribed = subscribed; - new_group->ranges = g_array_new (FALSE, FALSE, sizeof (ArticleRange)); - - g_hash_table_insert (newsrc->groups, new_group->name, new_group); - - newsrc->dirty = TRUE; - - return new_group; -} - -static int -camel_nntp_newsrc_group_get_highest_article_read(CamelNNTPNewsrc *newsrc, NewsrcGroup *group) -{ - if (!group || group->ranges->len == 0) - return 0; - - return g_array_index(group->ranges, ArticleRange, group->ranges->len - 1).high; -} - -static int -camel_nntp_newsrc_group_get_num_articles_read(CamelNNTPNewsrc *newsrc, NewsrcGroup *group) -{ - int i; - int count = 0; - - if (group == NULL) - return 0; - - for (i = 0; i < group->ranges->len; i ++) - count += (g_array_index(group->ranges, ArticleRange, i).high - - g_array_index(group->ranges, ArticleRange, i).low) + 1; - - return count; -} - - -static void -camel_nntp_newsrc_group_mark_range_read(CamelNNTPNewsrc *newsrc, NewsrcGroup *group, long low, long high) -{ - int i; - - if (group->ranges->len == 1 - && g_array_index (group->ranges, ArticleRange, 0).low == 0 - && g_array_index (group->ranges, ArticleRange, 0).high == 0) { - g_array_index (group->ranges, ArticleRange, 0).low = low; - g_array_index (group->ranges, ArticleRange, 0).high = high; - - newsrc->dirty = TRUE; - } - else { - ArticleRange tmp_range; - - for (i = 0; i < group->ranges->len; i ++) { - guint range_low = g_array_index (group->ranges, ArticleRange, i).low; - guint range_high = g_array_index (group->ranges, ArticleRange, i).high; - - /* if it's already part of a range, return immediately. */ - if (low >= range_low && - low <= range_high && - high >= range_low && - high <= range_high) { - return; - } - /* if we have a new lower bound for this range, set it. */ - else if (low <= range_low - && high >= range_low - && high <= range_high) { - g_array_index (group->ranges, ArticleRange, i).low = low; - newsrc->dirty = TRUE; - return; - } - /* if we have a new upper bound for this range, set it. */ - else if (high >= range_high - && low >= range_low - && low <= range_high) { - g_array_index (group->ranges, ArticleRange, i).high = high; - newsrc->dirty = TRUE; - return; - } - /* if we would be inserting another range that - starts one index higher than an existing - one, make the upper value of the existing - range the upper value of the new one. */ - else if (low == range_high + 1) { - g_array_index (group->ranges, ArticleRange, i).high = high; - newsrc->dirty = TRUE; - return; - } - /* if we would be inserting another range that - ends one index lower than an existing one, - group the existing range by setting its low - to the new low */ - else if (high == range_low - 1) { - g_array_index (group->ranges, ArticleRange, i).low = low; - newsrc->dirty = TRUE; - return; - } - /* if the range lies entirely outside another - range, doesn't coincide with it's - endpoints, and has lower values, insert it - into the middle of the list. */ - else if (low < range_low - && high < range_low) { - tmp_range.low = low; - tmp_range.high = high; - - group->ranges = g_array_insert_val (group->ranges, i, tmp_range); - newsrc->dirty = TRUE; - - return; - } - } - - /* if we made it here, the range needs to go at the end */ - tmp_range.low = low; - tmp_range.high = high; - group->ranges = g_array_append_val (group->ranges, tmp_range); - newsrc->dirty = TRUE; - } -} - -int -camel_nntp_newsrc_get_highest_article_read (CamelNNTPNewsrc *newsrc, const char *group_name) -{ - NewsrcGroup *group; - int ret; - - NEWSRC_LOCK(newsrc, lock); - - group = g_hash_table_lookup (newsrc->groups, group_name); - ret = camel_nntp_newsrc_group_get_highest_article_read (newsrc, group); - - NEWSRC_UNLOCK(newsrc, lock); - - return ret; -} - -int -camel_nntp_newsrc_get_num_articles_read (CamelNNTPNewsrc *newsrc, const char *group_name) -{ - NewsrcGroup *group; - int ret; - - NEWSRC_LOCK(newsrc, lock); - - group = g_hash_table_lookup (newsrc->groups, group_name); - ret = camel_nntp_newsrc_group_get_num_articles_read (newsrc, group); - - NEWSRC_UNLOCK(newsrc, lock); - - return ret; -} - -void -camel_nntp_newsrc_mark_article_read (CamelNNTPNewsrc *newsrc, const char *group_name, int num) -{ - NEWSRC_LOCK(newsrc, lock); - camel_nntp_newsrc_mark_range_read (newsrc, group_name, num, num); - NEWSRC_UNLOCK(newsrc, lock); -} - -void -camel_nntp_newsrc_mark_range_read(CamelNNTPNewsrc *newsrc, const char *group_name, long low, long high) -{ - NewsrcGroup *group; - - /* swap them if they're in the wrong order. */ - if (low > high) { - long tmp; - - tmp = high; - high = low; - low = tmp; - } - - NEWSRC_LOCK(newsrc, lock); - group = g_hash_table_lookup (newsrc->groups, group_name); - - camel_nntp_newsrc_group_mark_range_read (newsrc, group, low, high); - NEWSRC_UNLOCK(newsrc, lock); -} - -gboolean -camel_nntp_newsrc_article_is_read (CamelNNTPNewsrc *newsrc, const char *group_name, long num) -{ - int i; - NewsrcGroup *group; - int ret = FALSE; - - NEWSRC_LOCK(newsrc, lock); - group = g_hash_table_lookup (newsrc->groups, group_name); - - for (i = 0; i < group->ranges->len; i++) { - if (num >= g_array_index (group->ranges, ArticleRange, i).low && - num <= g_array_index (group->ranges, ArticleRange, i).high) { - ret = TRUE; - break; - } - } - - NEWSRC_UNLOCK(newsrc, lock); - - return FALSE; -} - -gboolean -camel_nntp_newsrc_group_is_subscribed (CamelNNTPNewsrc *newsrc, const char *group_name) -{ - NewsrcGroup *group; - int ret = FALSE; - - NEWSRC_LOCK(newsrc, lock); - - group = g_hash_table_lookup (newsrc->groups, group_name); - - if (group) { - ret = group->subscribed; - } - - NEWSRC_UNLOCK(newsrc, lock); - - return ret; -} - -void -camel_nntp_newsrc_subscribe_group (CamelNNTPNewsrc *newsrc, const char *group_name) -{ - NewsrcGroup *group; - - NEWSRC_LOCK(newsrc, lock); - - group = g_hash_table_lookup (newsrc->groups, group_name); - - if (group) { - if (!group->subscribed) - newsrc->dirty = TRUE; - group->subscribed = TRUE; - } - else { - camel_nntp_newsrc_group_add (newsrc, group_name, TRUE); - } - - NEWSRC_UNLOCK(newsrc, lock); -} - -void -camel_nntp_newsrc_unsubscribe_group (CamelNNTPNewsrc *newsrc, const char *group_name) -{ - NewsrcGroup *group; - - NEWSRC_LOCK(newsrc, lock); - - group = g_hash_table_lookup (newsrc->groups, group_name); - if (group) { - if (group->subscribed) - newsrc->dirty = TRUE; - group->subscribed = FALSE; - } - else { - camel_nntp_newsrc_group_add (newsrc, group_name, FALSE); - } - - NEWSRC_UNLOCK(newsrc, lock); -} - -struct newsrc_ptr_array { - GPtrArray *ptr_array; - gboolean subscribed_only; -}; - -/* this needs to strdup the grup_name, if the group array is likely to change */ -static void -get_group_foreach (char *group_name, NewsrcGroup *group, struct newsrc_ptr_array *npa) -{ - if (group->subscribed || !npa->subscribed_only) { - g_ptr_array_add (npa->ptr_array, group_name); - } -} - -GPtrArray * -camel_nntp_newsrc_get_subscribed_group_names (CamelNNTPNewsrc *newsrc) -{ - struct newsrc_ptr_array npa; - - g_return_val_if_fail (newsrc, NULL); - - NEWSRC_LOCK(newsrc, lock); - - npa.ptr_array = g_ptr_array_new(); - npa.subscribed_only = TRUE; - - g_hash_table_foreach (newsrc->groups, - (GHFunc)get_group_foreach, &npa); - - NEWSRC_UNLOCK(newsrc, lock); - - return npa.ptr_array; -} - -GPtrArray * -camel_nntp_newsrc_get_all_group_names (CamelNNTPNewsrc *newsrc) -{ - struct newsrc_ptr_array npa; - - g_return_val_if_fail (newsrc, NULL); - - NEWSRC_LOCK(newsrc, lock); - - npa.ptr_array = g_ptr_array_new(); - npa.subscribed_only = FALSE; - - g_hash_table_foreach (newsrc->groups, - (GHFunc)get_group_foreach, &npa); - - NEWSRC_UNLOCK(newsrc, lock); - - return npa.ptr_array; -} - -void -camel_nntp_newsrc_free_group_names (CamelNNTPNewsrc *newsrc, GPtrArray *group_names) -{ - g_ptr_array_free (group_names, TRUE); -} - -struct newsrc_fp { - CamelNNTPNewsrc *newsrc; - FILE *fp; -}; - -static void -camel_nntp_newsrc_write_group_line(gpointer key, NewsrcGroup *group, struct newsrc_fp *newsrc_fp) -{ - CamelNNTPNewsrc *newsrc; - FILE *fp; - int i; - - fp = newsrc_fp->fp; - newsrc = newsrc_fp->newsrc; - - fprintf (fp, "%s%c", group->name, group->subscribed ? ':' : '!'); - - if (group->ranges->len == 1 - && g_array_index (group->ranges, ArticleRange, 0).low == 0 - && g_array_index (group->ranges, ArticleRange, 0).high == 0) { - fprintf (fp, "\n"); - - return; /* special case since our parsing code will insert this - bogus range if there were no read articles. The code - to add a range is smart enough to remove this one if we - ever mark an article read, but we still need to deal with - it if that code doesn't get hit. */ - } - - fprintf (fp, " "); - - for (i = 0; i < group->ranges->len; i ++) { - char range_buffer[100]; - guint low = g_array_index (group->ranges, ArticleRange, i).low; - guint high = g_array_index (group->ranges, ArticleRange, i).high; - - if (low == high) - sprintf(range_buffer, "%d", low); - else if (low == high - 1) - sprintf(range_buffer, "%d,%d", low, high); - else - sprintf(range_buffer, "%d-%d", low, high); - - if (i != group->ranges->len - 1) - strcat(range_buffer, ","); - - fprintf (fp, range_buffer); - } - - fprintf (fp, "\n"); -} - -void -camel_nntp_newsrc_write_to_file(CamelNNTPNewsrc *newsrc, FILE *fp) -{ - struct newsrc_fp newsrc_fp; - - g_return_if_fail (newsrc); - - newsrc_fp.newsrc = newsrc; - newsrc_fp.fp = fp; - - NEWSRC_LOCK(newsrc, lock); - - g_hash_table_foreach (newsrc->groups, - (GHFunc)camel_nntp_newsrc_write_group_line, - &newsrc_fp); - - NEWSRC_UNLOCK(newsrc, lock); -} - -void -camel_nntp_newsrc_write(CamelNNTPNewsrc *newsrc) -{ - FILE *fp; - - g_return_if_fail (newsrc); - - NEWSRC_LOCK(newsrc, lock); - - if (!newsrc->dirty) - return; - - if ((fp = fopen(newsrc->filename, "w")) == NULL) { - g_warning ("Couldn't open newsrc file '%s'.\n", newsrc->filename); - NEWSRC_UNLOCK(newsrc, lock); - return; - } - - newsrc->dirty = FALSE; - NEWSRC_UNLOCK(newsrc, lock); - - camel_nntp_newsrc_write_to_file(newsrc, fp); - - fclose(fp); -} - -static void -camel_nntp_newsrc_parse_line(CamelNNTPNewsrc *newsrc, char *line) -{ - char *p, *comma, *dash; - gboolean is_subscribed; - NewsrcGroup *group; - - p = strchr(line, ':'); - - if (p) { - is_subscribed = TRUE; - } - else { - p = strchr(line, '!'); - if (p) - is_subscribed = FALSE; - else - return; /* bogus line. */ - } - - *p++ = '\0'; - - group = camel_nntp_newsrc_group_add (newsrc, line, is_subscribed); - - do { - guint high, low; - - comma = strchr(p, ','); - - if (comma) - *comma = '\0'; - - dash = strchr(p, '-'); - - if (!dash) { /* there wasn't a dash. must be just one number */ - high = low = atol(p); - } - else { /* there was a dash. */ - *dash = '\0'; - low = atol(p); - *dash = '-'; - p = dash + 1; - high = atol(p); - } - - camel_nntp_newsrc_group_mark_range_read (newsrc, group, low, high); - - if (comma) { - *comma = ','; - p = comma + 1; - } - - } while(comma); -} - -static char* -get_line (char *buf, char **p) -{ - char *l; - char *line; - - g_assert (*p == NULL || **p == '\n' || **p == '\0'); - - if (*p == NULL) { - *p = buf; - - if (**p == '\0') - return NULL; - } - else { - if (**p == '\0') - return NULL; - - (*p) ++; - - /* if we just incremented to the end of the buffer, return NULL */ - if (**p == '\0') - return NULL; - } - - l = strchr (*p, '\n'); - if (l) { - *l = '\0'; - line = g_strdup (*p); - *l = '\n'; - *p = l; - } - else { - /* we're at the last line (which isn't terminated by a \n, btw) */ - line = g_strdup (*p); - (*p) += strlen (*p); - } - - return line; -} - -CamelNNTPNewsrc * -camel_nntp_newsrc_read_for_server (const char *server) -{ - int fd; - char buf[1024]; - char *file_contents, *line, *p; - char *filename; - CamelNNTPNewsrc *newsrc; - int newsrc_len; - int len_read = 0; - struct stat sb; - - filename = g_strdup_printf ("%s/.newsrc-%s", g_get_home_dir(), server); - - newsrc = g_new0(CamelNNTPNewsrc, 1); - newsrc->filename = filename; - newsrc->groups = g_hash_table_new (g_str_hash, g_str_equal); -#ifdef ENABLE_THREADS - newsrc->lock = g_mutex_new(); -#endif - - if ((fd = open(filename, O_RDONLY)) == -1) { - g_warning ("~/.newsrc-%s not present.\n", server); - return newsrc; - } - - if (fstat (fd, &sb) == -1) { - g_warning ("failed fstat on ~/.newsrc-%s: %s\n", server, strerror(errno)); - return newsrc; - } - newsrc_len = sb.st_size; - - file_contents = g_malloc (newsrc_len + 1); - - while (len_read < newsrc_len) { - int c = read (fd, buf, sizeof (buf)); - - if (c == -1) - break; - - memcpy (&file_contents[len_read], buf, c); - len_read += c; - } - file_contents [len_read] = 0; - - p = NULL; - while ((line = get_line (file_contents, &p))) { - camel_nntp_newsrc_parse_line(newsrc, line); - g_free (line); - } - - close (fd); - g_free (file_contents); - - return newsrc; -} |