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More care reporting diff patch iteration errors

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This commit is contained in:
Russell Belfer 2013-05-01 13:43:48 -07:00
parent 3f663178ed
commit 52c102b7f6
1 changed files with 17 additions and 5 deletions
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22
src/diff_output.c
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@ -1611,6 +1611,12 @@ int git_diff_patch_line_stats(
return 0;
}
static int diff_error_outofrange(const char *thing)
{
giterr_set(GITERR_INVALID, "Diff patch %s index out of range", thing);
return GIT_ENOTFOUND;
}
int git_diff_patch_get_hunk(
const git_diff_range **range,
const char **header,
@ -1628,7 +1634,8 @@ int git_diff_patch_get_hunk(
if (header) *header = NULL;
if (header_len) *header_len = 0;
if (lines_in_hunk) *lines_in_hunk = 0;
return GIT_ENOTFOUND;
return diff_error_outofrange("hunk");
}
hunk = &patch->hunks[hunk_idx];
@ -1648,7 +1655,7 @@ int git_diff_patch_num_lines_in_hunk(
assert(patch);
if (hunk_idx >= patch->hunks_size)
return GIT_ENOTFOUND;
return diff_error_outofrange("hunk");
else
return (int)patch->hunks[hunk_idx].line_count;
}
@ -1665,15 +1672,20 @@ int git_diff_patch_get_line_in_hunk(
{
diff_patch_hunk *hunk;
diff_patch_line *line;
const char *thing;
assert(patch);
if (hunk_idx >= patch->hunks_size)
if (hunk_idx >= patch->hunks_size) {
thing = "hunk";
goto notfound;
}
hunk = &patch->hunks[hunk_idx];
if (line_of_hunk >= hunk->line_count)
if (line_of_hunk >= hunk->line_count) {
thing = "link";
goto notfound;
}
line = &patch->lines[hunk->line_start + line_of_hunk];
@ -1692,7 +1704,7 @@ notfound:
if (old_lineno) *old_lineno = -1;
if (new_lineno) *new_lineno = -1;
return GIT_ENOTFOUND;
return diff_error_outofrange(thing);
}
static int print_to_buffer_cb(