diff options
Diffstat (limited to 'apply.c')
| -rw-r--r-- | apply.c | 88 |
1 files changed, 56 insertions, 32 deletions
@@ -137,6 +137,7 @@ void clear_apply_state(struct apply_state *state) strset_clear(&state->removed_symlinks); strset_clear(&state->kept_symlinks); strbuf_release(&state->root); + FREE_AND_NULL(state->fake_ancestor); /* &state->fn_table is cleared at the end of apply_patch() */ } @@ -2495,18 +2496,21 @@ static int match_fragment(struct apply_state *state, int match_beginning, int match_end) { int i; - char *fixed_buf, *buf, *orig, *target; - struct strbuf fixed; - size_t fixed_len, postlen; + const char *orig, *target; + struct strbuf fixed = STRBUF_INIT; + size_t postlen; int preimage_limit; + int ret; if (preimage->nr + current_lno <= img->nr) { /* * The hunk falls within the boundaries of img. */ preimage_limit = preimage->nr; - if (match_end && (preimage->nr + current_lno != img->nr)) - return 0; + if (match_end && (preimage->nr + current_lno != img->nr)) { + ret = 0; + goto out; + } } else if (state->ws_error_action == correct_ws_error && (ws_rule & WS_BLANK_AT_EOF)) { /* @@ -2523,17 +2527,23 @@ static int match_fragment(struct apply_state *state, * we are not removing blanks at the end, so we * should reject the hunk at this position. */ - return 0; + ret = 0; + goto out; } - if (match_beginning && current_lno) - return 0; + if (match_beginning && current_lno) { + ret = 0; + goto out; + } /* Quick hash check */ - for (i = 0; i < preimage_limit; i++) + for (i = 0; i < preimage_limit; i++) { if ((img->line[current_lno + i].flag & LINE_PATCHED) || - (preimage->line[i].hash != img->line[current_lno + i].hash)) - return 0; + (preimage->line[i].hash != img->line[current_lno + i].hash)) { + ret = 0; + goto out; + } + } if (preimage_limit == preimage->nr) { /* @@ -2546,8 +2556,10 @@ static int match_fragment(struct apply_state *state, if ((match_end ? (current + preimage->len == img->len) : (current + preimage->len <= img->len)) && - !memcmp(img->buf + current, preimage->buf, preimage->len)) - return 1; + !memcmp(img->buf + current, preimage->buf, preimage->len)) { + ret = 1; + goto out; + } } else { /* * The preimage extends beyond the end of img, so @@ -2556,7 +2568,7 @@ static int match_fragment(struct apply_state *state, * There must be one non-blank context line that match * a line before the end of img. */ - char *buf_end; + const char *buf, *buf_end; buf = preimage->buf; buf_end = buf; @@ -2566,8 +2578,10 @@ static int match_fragment(struct apply_state *state, for ( ; buf < buf_end; buf++) if (!isspace(*buf)) break; - if (buf == buf_end) - return 0; + if (buf == buf_end) { + ret = 0; + goto out; + } } /* @@ -2575,12 +2589,16 @@ static int match_fragment(struct apply_state *state, * fuzzy matching. We collect all the line length information because * we need it to adjust whitespace if we match. */ - if (state->ws_ignore_action == ignore_ws_change) - return line_by_line_fuzzy_match(img, preimage, postimage, - current, current_lno, preimage_limit); + if (state->ws_ignore_action == ignore_ws_change) { + ret = line_by_line_fuzzy_match(img, preimage, postimage, + current, current_lno, preimage_limit); + goto out; + } - if (state->ws_error_action != correct_ws_error) - return 0; + if (state->ws_error_action != correct_ws_error) { + ret = 0; + goto out; + } /* * The hunk does not apply byte-by-byte, but the hash says @@ -2609,7 +2627,7 @@ static int match_fragment(struct apply_state *state, * but in this loop we will only handle the part of the * preimage that falls within the file. */ - strbuf_init(&fixed, preimage->len + 1); + strbuf_grow(&fixed, preimage->len + 1); orig = preimage->buf; target = img->buf + current; for (i = 0; i < preimage_limit; i++) { @@ -2645,8 +2663,10 @@ static int match_fragment(struct apply_state *state, postlen += tgtfix.len; strbuf_release(&tgtfix); - if (!match) - goto unmatch_exit; + if (!match) { + ret = 0; + goto out; + } orig += oldlen; target += tgtlen; @@ -2667,9 +2687,13 @@ static int match_fragment(struct apply_state *state, /* Try fixing the line in the preimage */ ws_fix_copy(&fixed, orig, oldlen, ws_rule, NULL); - for (j = fixstart; j < fixed.len; j++) - if (!isspace(fixed.buf[j])) - goto unmatch_exit; + for (j = fixstart; j < fixed.len; j++) { + if (!isspace(fixed.buf[j])) { + ret = 0; + goto out; + } + } + orig += oldlen; } @@ -2679,16 +2703,16 @@ static int match_fragment(struct apply_state *state, * has whitespace breakages unfixed, and fixing them makes the * hunk match. Update the context lines in the postimage. */ - fixed_buf = strbuf_detach(&fixed, &fixed_len); if (postlen < postimage->len) postlen = 0; update_pre_post_images(preimage, postimage, - fixed_buf, fixed_len, postlen); - return 1; + fixed.buf, fixed.len, postlen); - unmatch_exit: + ret = 1; + +out: strbuf_release(&fixed); - return 0; + return ret; } static int find_pos(struct apply_state *state, |