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authorJeffrey Stedfast <fejj@ximian.com>2001-12-18 02:24:13 +0800
committerJeffrey Stedfast <fejj@src.gnome.org>2001-12-18 02:24:13 +0800
commita6769def1397c5739a0e84d06aeeee44d73d37d7 (patch)
tree2a158f5a674f29d07c7e554adb9b602abbfb5441 /composer
parentd55058d6634181451751970ee40eca0b4c99040a (diff)
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Don't block forever if we are reading a fifo with no data.
2001-12-17 Jeffrey Stedfast <fejj@ximian.com> * e-msg-composer.c (read_file_content): Don't block forever if we are reading a fifo with no data. svn path=/trunk/; revision=15122
Diffstat (limited to 'composer')
-rw-r--r--composer/ChangeLog5
-rw-r--r--composer/e-msg-composer.c68
2 files changed, 48 insertions, 25 deletions
diff --git a/composer/ChangeLog b/composer/ChangeLog
index 20c8a6f58b..a731fc0a2f 100644
--- a/composer/ChangeLog
+++ b/composer/ChangeLog
@@ -1,3 +1,8 @@
+2001-12-17 Jeffrey Stedfast <fejj@ximian.com>
+
+ * e-msg-composer.c (read_file_content): Don't block forever if we
+ are reading a fifo with no data.
+
2001-12-14 Jeffrey Stedfast <fejj@ximian.com>
* e-msg-composer.c (class_init): Setup the SAVE_DRAFT signal.
diff --git a/composer/e-msg-composer.c b/composer/e-msg-composer.c
index b54dd60c14..f2112f67c2 100644
--- a/composer/e-msg-composer.c
+++ b/composer/e-msg-composer.c
@@ -668,23 +668,44 @@ build_message (EMsgComposer *composer)
}
static char *
-read_file_content (gint fd)
+read_file_content (int fd)
{
GByteArray *contents;
- gchar buf[4096];
- gint n;
- gchar *body;
+ char *body, buf[4096];
+ struct timeval tv;
+ fd_set rdset;
+ ssize_t n;
+ int flags;
g_return_val_if_fail (fd > 0, NULL);
contents = g_byte_array_new ();
- while ((n = read (fd, buf, 4096)) > 0) {
- g_byte_array_append (contents, buf, n);
- }
- g_byte_array_append (contents, "\0", 1);
- body = (n < 0) ? NULL : (gchar *)contents->data;
- g_byte_array_free (contents, (n < 0));
+ flags = fcntl (fd, F_GETFL);
+ fcntl (fd, F_SETFL, flags | O_NONBLOCK);
+
+ FD_ZERO (&rdset);
+ FD_SET (fd, &rdset);
+
+ do {
+ tv.tv_sec = 0;
+ tv.tv_usec = 10;
+
+ n = -1;
+ select (fd + 1, &rdset, NULL, NULL, &tv);
+ if (FD_ISSET (fd, &rdset)) {
+ n = read (fd, buf, 4096);
+ if (n > 0)
+ g_byte_array_append (contents, buf, n);
+ }
+ } while (n != -1);
+
+ fcntl (fd, F_SETFL, flags);
+
+ g_byte_array_append (contents, "", 1);
+
+ body = (contents->len == 1) ? NULL : (char *) contents->data;
+ g_byte_array_free (contents, body != NULL);
return body;
}
@@ -697,9 +718,9 @@ executed_file_output (const char *file_name)
char buf[4096];
int n;
char *body;
-
+
g_return_val_if_fail (file_name && *file_name, NULL);
-
+
in = popen (file_name, "r");
if (in == NULL)
return NULL;
@@ -709,38 +730,35 @@ executed_file_output (const char *file_name)
g_byte_array_append (contents, buf, n);
}
g_byte_array_append (contents, "\0", 1);
-
+
body = (n < 0) ? NULL : (char *) contents->data;
g_byte_array_free (contents, (n < 0));
-
+
pclose (in);
-
+
return body;
}
static char *
get_file_content (const char *file_name, gboolean convert, guint flags)
{
+ char *raw, *html, *msg = NULL;
struct stat statbuf;
- gint fd;
- char *raw;
- char *html;
- char *msg = NULL;
-
+ int fd;
+
if (stat (file_name, &statbuf) == -1)
return g_strdup ("");
-
+
if ((statbuf.st_mode & S_IXUSR)
&& getenv ("EVOLUTION_PLEASE_EXECUTE_MY_SIGNATURE_FILE")) {
-
+
raw = executed_file_output (file_name);
if (raw == NULL) {
msg = g_strdup_printf (_("Error while executing file %s:\n"
"%s"), file_name, g_strerror (errno));
}
-
- } else {
+ } else {
fd = open (file_name, O_RDONLY | O_CREAT, 0775);
raw = read_file_content (fd);
if (raw == NULL) {
@@ -749,7 +767,7 @@ get_file_content (const char *file_name, gboolean convert, guint flags)
}
close (fd);
}
-
+
if (msg != NULL) {
gnome_error_dialog (msg);
g_free (msg);