-
/*
- * folder_read.c -- initialize folder structure and read folder
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
-
+** folder_read.c -- initialize folder structure and read folder
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
+
+#include <unistd.h>
#include <h/mh.h>
#include <h/utils.h>
-
-/* We allocate the `mi' array 1024 elements at a time */
-#define NUMMSGS 1024
+#include <dirent.h>
+#include <sys/stat.h>
/*
- * 1) Create the folder/message structure
- * 2) Read the directory (folder) and temporarily
- * record the numbers of the messages we have seen.
- * 3) Then allocate the array for message attributes and
- * set the initial flags for all messages we've seen.
- * 4) Read and initialize the sequence information.
- */
+** 1) Create the folder/message structure
+** 2) Read the directory (folder) and temporarily
+** record the numbers of the messages we have seen.
+** 3) Then allocate the array for message attributes and
+** set the initial flags for all messages we've seen.
+** 4) Read and initialize the sequence information.
+*/
+
+static int others;
+
+static int
+msgnumcmp(const struct dirent **d1, const struct dirent **d2)
+{
+ size_t l1, l2;
-struct msgs *
-folder_read (char *name)
+ l1 = strlen((*d1)->d_name);
+ l2 = strlen((*d2)->d_name);
+ if (l1 < l2) {
+ return -1;
+ }
+ if (l1 > l2) {
+ return 1;
+ }
+ return strcmp((*d1)->d_name, (*d2)->d_name);
+}
+
+static int
+msgfilter(const struct dirent *e)
{
- int msgnum, prefix_len, len, *mi;
- struct msgs *mp;
- struct stat st;
- struct dirent *dp;
- DIR *dd;
-
- name = m_mailpath (name);
- if (!(dd = opendir (name))) {
- free (name);
- return NULL;
- }
-
- if (stat (name, &st) == -1) {
- free (name);
- return NULL;
- }
-
- /* Allocate the main structure for folder information */
- mp = (struct msgs *) mh_xmalloc ((size_t) sizeof(*mp));
-
- clear_folder_flags (mp);
- mp->foldpath = name;
- mp->lowmsg = 0;
- mp->hghmsg = 0;
- mp->curmsg = 0;
- mp->lowsel = 0;
- mp->hghsel = 0;
- mp->numsel = 0;
- mp->nummsg = 0;
-
- if (access (name, W_OK) == -1)
- set_readonly (mp);
- prefix_len = strlen(backup_prefix);
-
- /*
- * Allocate a temporary place to record the
- * name of the messages in this folder.
- */
- len = NUMMSGS;
- mi = (int *) mh_xmalloc ((size_t) (len * sizeof(*mi)));
-
- while ((dp = readdir (dd))) {
- if ((msgnum = m_atoi (dp->d_name)) && msgnum > 0) {
- /*
- * Check if we need to allocate more
- * temporary elements for message names.
- */
- if (mp->nummsg >= len) {
- len += NUMMSGS;
- mi = (int *) mh_xrealloc (mi, (size_t) (len * sizeof(*mi)));
- }
-
- /* Check if this is the first message we've seen */
- if (mp->nummsg == 0) {
- mp->lowmsg = msgnum;
- mp->hghmsg = msgnum;
- } else {
- /* Check if this is it the highest or lowest we've seen? */
- if (msgnum < mp->lowmsg)
- mp->lowmsg = msgnum;
- if (msgnum > mp->hghmsg)
- mp->hghmsg = msgnum;
- }
-
- /*
- * Now increment count, and record message
- * number in a temporary place for now.
- */
- mi[mp->nummsg++] = msgnum;
-
- } else {
- switch (dp->d_name[0]) {
- case '.':
- case ',':
-#ifdef MHE
- case '+':
-#endif /* MHE */
- continue;
-
- default:
- /* skip any files beginning with backup prefix */
- if (!strncmp (dp->d_name, backup_prefix, prefix_len))
- continue;
-
- /* skip the altmsg link file */
- if (!strcmp (dp->d_name, altmsglink))
- continue;
-
- /* indicate that there are other files in folder */
- set_other_files (mp);
- continue;
- }
+ int i;
+ /* For compatibility with nmh, ignore rmm backup files. */
+ if (e->d_name[0] == '.' || e->d_name[0] == ',' || e->d_name[0] == '#') {
+ return 0;
+ }
+ for (i = 0; e->d_name[i]; i++) {
+ if ((i == 0 && e->d_name[i] == '0') || e->d_name[i] < '0' || e->d_name[i] > '9') {
+ others = 1;
+ return 0;
+ }
}
- }
+ return 1;
+}
- closedir (dd);
- mp->lowoff = max (mp->lowmsg, 1);
+struct msgs *
+folder_read(char *name)
+{
+ int i;
+ struct msgs *mp;
+ struct stat st;
+ struct dirent **dp;
- /* Go ahead and allocate space for 100 additional messages. */
- mp->hghoff = mp->hghmsg + 100;
+ others = 0;
+ name = mh_xstrdup(toabsdir(name));
+
+ if (stat(name, &st) == -1) {
+ mh_free0(&name);
+ return NULL;
+ }
- /* for testing, allocate minimal necessary space */
- /* mp->hghoff = max (mp->hghmsg, 1); */
+ /* Allocate the main structure for folder information */
+ mp = mh_xcalloc(1, sizeof(*mp));
- /*
- * Allocate space for status of each message.
- */
- mp->msgstats = mh_xmalloc (MSGSTATSIZE(mp, mp->lowoff, mp->hghoff));
+ mp->foldpath = name;
- /*
- * Clear all the flag bits for all the message
- * status entries we just allocated.
- */
- for (msgnum = mp->lowoff; msgnum <= mp->hghoff; msgnum++)
- clear_msg_flags (mp, msgnum);
+ if (access(name, W_OK) == -1)
+ set_readonly(mp);
- /*
- * Scan through the array of messages we've seen and
- * setup the initial flags for those messages in the
- * newly allocated mp->msgstats area.
- */
- for (msgnum = 0; msgnum < mp->nummsg; msgnum++)
- set_exists (mp, mi[msgnum]);
+ mp->nummsg = scandir(name, &dp, msgfilter, msgnumcmp);
- free (mi); /* We don't need this anymore */
+ if (others)
+ set_other_files(mp);
+
+ if (mp->nummsg < 0) {
+ mh_free0(&name);
+ mh_free0(&mp);
+ return NULL;
+ }
+ if (mp->nummsg > 0) {
+ mp->lowmsg = m_atoi(dp[0]->d_name);
+ mp->hghmsg = m_atoi(dp[mp->nummsg-1]->d_name);
+ }
+ mp->lowoff = max(mp->lowmsg, 1);
+ mp->hghoff = mp->hghmsg + 100;
+ mp->msgstats = mh_xcalloc(MSGSTATSIZE(mp, mp->lowoff, mp->hghoff), 1);
+ for (i = 0; i < mp->nummsg; i++) {
+ set_exists(mp, m_atoi(dp[i]->d_name));
+ mh_free0(dp + i);
+ }
+ mh_free0(&dp);
- /*
- * Read and initialize the sequence information.
- */
- seq_read (mp);
+ /*
+ ** Read and initialize the sequence information.
+ */
+ seq_read(mp);
- return mp;
+ return mp;
}
projects / mmh / blobdiff