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-rw-r--r--convert.c54
1 files changed, 40 insertions, 14 deletions
diff --git a/convert.c b/convert.c
index 86e9c29ec0..c9ab54ffd2 100644
--- a/convert.c
+++ b/convert.c
@@ -876,24 +876,42 @@ int is_null_stream_filter(struct stream_filter *filter)
/*
* LF-to-CRLF filter
*/
+
+struct lf_to_crlf_filter {
+ struct stream_filter filter;
+ unsigned want_lf:1;
+};
+
static int lf_to_crlf_filter_fn(struct stream_filter *filter,
const char *input, size_t *isize_p,
char *output, size_t *osize_p)
{
- size_t count;
+ size_t count, o = 0;
+ struct lf_to_crlf_filter *lf_to_crlf = (struct lf_to_crlf_filter *)filter;
+
+ /* Output a pending LF if we need to */
+ if (lf_to_crlf->want_lf) {
+ output[o++] = '\n';
+ lf_to_crlf->want_lf = 0;
+ }
+
+ /* We are told to drain */
+ if (!input) {
+ *osize_p -= o;
+ return 0;
+ }
- if (!input)
- return 0; /* we do not keep any states */
count = *isize_p;
if (count) {
- size_t i, o;
- for (i = o = 0; o < *osize_p && i < count; i++) {
+ size_t i;
+ for (i = 0; o < *osize_p && i < count; i++) {
char ch = input[i];
if (ch == '\n') {
- if (o + 1 < *osize_p)
- output[o++] = '\r';
- else
- break;
+ output[o++] = '\r';
+ if (o >= *osize_p) {
+ lf_to_crlf->want_lf = 1;
+ continue; /* We need to increase i */
+ }
}
output[o++] = ch;
}
@@ -904,15 +922,23 @@ static int lf_to_crlf_filter_fn(struct stream_filter *filter,
return 0;
}
+static void lf_to_crlf_free_fn(struct stream_filter *filter)
+{
+ free(filter);
+}
+
static struct stream_filter_vtbl lf_to_crlf_vtbl = {
lf_to_crlf_filter_fn,
- null_free_fn,
+ lf_to_crlf_free_fn,
};
-static struct stream_filter lf_to_crlf_filter_singleton = {
- &lf_to_crlf_vtbl,
-};
+static struct stream_filter *lf_to_crlf_filter(void)
+{
+ struct lf_to_crlf_filter *lf_to_crlf = xcalloc(1, sizeof(*lf_to_crlf));
+ lf_to_crlf->filter.vtbl = &lf_to_crlf_vtbl;
+ return (struct stream_filter *)lf_to_crlf;
+}
/*
* Cascade filter
@@ -1194,7 +1220,7 @@ struct stream_filter *get_stream_filter(const char *path, const unsigned char *s
else if (output_eol(crlf_action) == EOL_CRLF &&
!(crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS))
- filter = cascade_filter(filter, &lf_to_crlf_filter_singleton);
+ filter = cascade_filter(filter, lf_to_crlf_filter());
return filter;
}