To libify `git apply` functionality we have to signal errors
to the caller instead of die()ing.
As a first step in this direction, let's make apply_patch() return
-1 in case of errors instead of dying. For now its only caller
apply_all_patches() will exit(1) when apply_patch() return -1.
In a later patch, apply_all_patches() will return -1 too instead of
exiting.
Signed-off-by: Christian Couder <chrisc...@tuxfamily.org>
---
builtin/apply.c | 39 ++++++++++++++++++++++++++++-----------
1 file changed, 28 insertions(+), 11 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index 84ff2da..bc209f5 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -4522,6 +4522,14 @@ static int write_out_results(struct apply_state *state,
struct patch *list)
#define INACCURATE_EOF (1<<0)
#define RECOUNT (1<<1)
+/*
+ * Try to apply a patch.
+ *
+ * Returns:
+ * -1 if an error happened
+ * 0 if the patch applied
+ * 1 if the patch did not apply
+ */
static int apply_patch(struct apply_state *state,
int fd,
const char *filename,
@@ -4564,7 +4572,7 @@ static int apply_patch(struct apply_state *state,
}
if (!list && !skipped_patch)
- die(_("unrecognized input"));
+ return error(_("unrecognized input"));
if (state->whitespace_error && (state->ws_error_action ==
die_on_ws_error))
state->apply = 0;
@@ -4575,19 +4583,17 @@ static int apply_patch(struct apply_state *state,
hold_locked_index(state->lock_file, 1);
}
- if (state->check_index) {
- if (read_cache() < 0)
- die(_("unable to read index file"));
- }
+ if (state->check_index && read_cache() < 0)
+ return error(_("unable to read index file"));
if ((state->check || state->apply) &&
check_patch_list(state, list) < 0 &&
!state->apply_with_reject)
- exit(1);
+ return -1;
if (state->apply && write_out_results(state, list)) {
if (state->apply_with_reject)
- exit(1);
+ return -1;
/* with --3way, we still need to write the index out */
return 1;
}
@@ -4730,6 +4736,7 @@ static int apply_all_patches(struct apply_state *state,
int options)
{
int i;
+ int res;
int errs = 0;
int read_stdin = 1;
@@ -4738,7 +4745,10 @@ static int apply_all_patches(struct apply_state *state,
int fd;
if (!strcmp(arg, "-")) {
- errs |= apply_patch(state, 0, "<stdin>", options);
+ res = apply_patch(state, 0, "<stdin>", options);
+ if (res < 0)
+ exit(1);
+ errs |= res;
read_stdin = 0;
continue;
} else if (0 < state->prefix_length)
@@ -4751,12 +4761,19 @@ static int apply_all_patches(struct apply_state *state,
die_errno(_("can't open patch '%s'"), arg);
read_stdin = 0;
set_default_whitespace_mode(state);
- errs |= apply_patch(state, fd, arg, options);
+ res = apply_patch(state, fd, arg, options);
+ if (res < 0)
+ exit(1);
+ errs |= res;
close(fd);
}
set_default_whitespace_mode(state);
- if (read_stdin)
- errs |= apply_patch(state, 0, "<stdin>", options);
+ if (read_stdin) {
+ res = apply_patch(state, 0, "<stdin>", options);
+ if (res < 0)
+ exit(1);
+ errs |= res;
+ }
if (state->whitespace_error) {
if (state->squelch_whitespace_errors &&
--
2.8.1.300.g5fed0c0
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