diff options
Diffstat (limited to 'apply.c')
| -rw-r--r-- | apply.c | 127 |
1 files changed, 71 insertions, 56 deletions
@@ -8,6 +8,7 @@ */ #include "cache.h" +#include "config.h" #include "blob.h" #include "delta.h" #include "diff.h" @@ -79,7 +80,6 @@ int init_apply_state(struct apply_state *state, { memset(state, 0, sizeof(*state)); state->prefix = prefix; - state->prefix_length = state->prefix ? strlen(state->prefix) : 0; state->lock_file = lock_file; state->newfd = -1; state->apply = 1; @@ -219,6 +219,7 @@ struct patch { unsigned int recount:1; unsigned int conflicted_threeway:1; unsigned int direct_to_threeway:1; + unsigned int crlf_in_old:1; struct fragment *fragments; char *result; size_t resultsize; @@ -763,17 +764,6 @@ static char *find_name_traditional(struct apply_state *state, return find_name_common(state, line, def, p_value, line + len, 0); } -static int count_slashes(const char *cp) -{ - int cnt = 0; - char ch; - - while ((ch = *cp++)) - if (ch == '/') - cnt++; - return cnt; -} - /* * Given the string after "--- " or "+++ ", guess the appropriate * p_value for the given patch. @@ -796,11 +786,11 @@ static int guess_p_value(struct apply_state *state, const char *nameline) * Does it begin with "a/$our-prefix" and such? Then this is * very likely to apply to our directory. */ - if (!strncmp(name, state->prefix, state->prefix_length)) + if (starts_with(name, state->prefix)) val = count_slashes(state->prefix); else { cp++; - if (!strncmp(cp, state->prefix, state->prefix_length)) + if (starts_with(cp, state->prefix)) val = count_slashes(state->prefix) + 1; } } @@ -822,16 +812,13 @@ static int has_epoch_timestamp(const char *nameline) * 1970-01-01, and the seconds part must be "00". */ const char stamp_regexp[] = - "^(1969-12-31|1970-01-01)" - " " - "[0-2][0-9]:[0-5][0-9]:00(\\.0+)?" + "^[0-2][0-9]:([0-5][0-9]):00(\\.0+)?" " " "([-+][0-2][0-9]:?[0-5][0-9])\n"; const char *timestamp = NULL, *cp, *colon; static regex_t *stamp; regmatch_t m[10]; - int zoneoffset; - int hourminute; + int zoneoffset, epoch_hour, hour, minute; int status; for (cp = nameline; *cp != '\n'; cp++) { @@ -840,6 +827,18 @@ static int has_epoch_timestamp(const char *nameline) } if (!timestamp) return 0; + + /* + * YYYY-MM-DD hh:mm:ss must be from either 1969-12-31 + * (west of GMT) or 1970-01-01 (east of GMT) + */ + if (skip_prefix(timestamp, "1969-12-31 ", ×tamp)) + epoch_hour = 24; + else if (skip_prefix(timestamp, "1970-01-01 ", ×tamp)) + epoch_hour = 0; + else + return 0; + if (!stamp) { stamp = xmalloc(sizeof(*stamp)); if (regcomp(stamp, stamp_regexp, REG_EXTENDED)) { @@ -857,6 +856,9 @@ static int has_epoch_timestamp(const char *nameline) return 0; } + hour = strtol(timestamp, NULL, 10); + minute = strtol(timestamp + m[1].rm_so, NULL, 10); + zoneoffset = strtol(timestamp + m[3].rm_so + 1, (char **) &colon, 10); if (*colon == ':') zoneoffset = zoneoffset * 60 + strtol(colon + 1, NULL, 10); @@ -865,20 +867,7 @@ static int has_epoch_timestamp(const char *nameline) if (timestamp[m[3].rm_so] == '-') zoneoffset = -zoneoffset; - /* - * YYYY-MM-DD hh:mm:ss must be from either 1969-12-31 - * (west of GMT) or 1970-01-01 (east of GMT) - */ - if ((zoneoffset < 0 && memcmp(timestamp, "1969-12-31", 10)) || - (0 <= zoneoffset && memcmp(timestamp, "1970-01-01", 10))) - return 0; - - hourminute = (strtol(timestamp + 11, NULL, 10) * 60 + - strtol(timestamp + 14, NULL, 10) - - zoneoffset); - - return ((zoneoffset < 0 && hourminute == 1440) || - (0 <= zoneoffset && !hourminute)); + return hour * 60 + minute - zoneoffset == epoch_hour * 60; } /* @@ -1673,6 +1662,19 @@ static void check_whitespace(struct apply_state *state, } /* + * Check if the patch has context lines with CRLF or + * the patch wants to remove lines with CRLF. + */ +static void check_old_for_crlf(struct patch *patch, const char *line, int len) +{ + if (len >= 2 && line[len-1] == '\n' && line[len-2] == '\r') { + patch->ws_rule |= WS_CR_AT_EOL; + patch->crlf_in_old = 1; + } +} + + +/* * Parse a unified diff. Note that this really needs to parse each * fragment separately, since the only way to know the difference * between a "---" that is part of a patch, and a "---" that starts @@ -1722,11 +1724,14 @@ static int parse_fragment(struct apply_state *state, if (!deleted && !added) leading++; trailing++; + check_old_for_crlf(patch, line, len); if (!state->apply_in_reverse && state->ws_error_action == correct_ws_error) check_whitespace(state, line, len, patch->ws_rule); break; case '-': + if (!state->apply_in_reverse) + check_old_for_crlf(patch, line, len); if (state->apply_in_reverse && state->ws_error_action != nowarn_ws_error) check_whitespace(state, line, len, patch->ws_rule); @@ -1735,6 +1740,8 @@ static int parse_fragment(struct apply_state *state, trailing = 0; break; case '+': + if (state->apply_in_reverse) + check_old_for_crlf(patch, line, len); if (!state->apply_in_reverse && state->ws_error_action != nowarn_ws_error) check_whitespace(state, line, len, patch->ws_rule); @@ -2099,17 +2106,16 @@ static int use_patch(struct apply_state *state, struct patch *p) int i; /* Paths outside are not touched regardless of "--include" */ - if (0 < state->prefix_length) { - int pathlen = strlen(pathname); - if (pathlen <= state->prefix_length || - memcmp(state->prefix, pathname, state->prefix_length)) + if (state->prefix && *state->prefix) { + const char *rest; + if (!skip_prefix(pathname, state->prefix, &rest) || !*rest) return 0; } /* See if it matches any of exclude/include rule */ for (i = 0; i < state->limit_by_name.nr; i++) { struct string_list_item *it = &state->limit_by_name.items[i]; - if (!wildmatch(it->string, pathname, 0, NULL)) + if (!wildmatch(it->string, pathname, 0)) return (it->util != NULL); } @@ -2278,8 +2284,11 @@ static void show_stats(struct apply_state *state, struct patch *patch) add, pluses, del, minuses); } -static int read_old_data(struct stat *st, const char *path, struct strbuf *buf) +static int read_old_data(struct stat *st, struct patch *patch, + const char *path, struct strbuf *buf) { + enum safe_crlf safe_crlf = patch->crlf_in_old ? + SAFE_CRLF_KEEP_CRLF : SAFE_CRLF_RENORMALIZE; switch (st->st_mode & S_IFMT) { case S_IFLNK: if (strbuf_readlink(buf, path, st->st_size) < 0) @@ -2288,7 +2297,15 @@ static int read_old_data(struct stat *st, const char *path, struct strbuf *buf) case S_IFREG: if (strbuf_read_file(buf, path, st->st_size) != st->st_size) return error(_("unable to open or read %s"), path); - convert_to_git(path, buf->buf, buf->len, buf, 0); + /* + * "git apply" without "--index/--cached" should never look + * at the index; the target file may not have been added to + * the index yet, and we may not even be in any Git repository. + * Pass NULL to convert_to_git() to stress this; the function + * should never look at the index when explicit crlf option + * is given. + */ + convert_to_git(NULL, path, buf->buf, buf->len, buf, safe_crlf); return 0; default: return -1; @@ -2819,13 +2836,10 @@ static void update_image(struct apply_state *state, img->line_allocated = img->line; } if (preimage_limit != postimage->nr) - memmove(img->line + applied_pos + postimage->nr, - img->line + applied_pos + preimage_limit, - (img->nr - (applied_pos + preimage_limit)) * - sizeof(*img->line)); - memcpy(img->line + applied_pos, - postimage->line, - postimage->nr * sizeof(*img->line)); + MOVE_ARRAY(img->line + applied_pos + postimage->nr, + img->line + applied_pos + preimage_limit, + img->nr - (applied_pos + preimage_limit)); + COPY_ARRAY(img->line + applied_pos, postimage->line, postimage->nr); if (!state->allow_overlap) for (i = 0; i < postimage->nr; i++) img->line[applied_pos + i].flag |= LINE_PATCHED; @@ -2906,6 +2920,7 @@ static int apply_one_fragment(struct apply_state *state, if (plen && (ws_rule & WS_BLANK_AT_EOF) && ws_blank_line(patch + 1, plen, ws_rule)) is_blank_context = 1; + /* fallthrough */ case '-': memcpy(old, patch + 1, plen); add_line_info(&preimage, old, plen, @@ -2913,7 +2928,7 @@ static int apply_one_fragment(struct apply_state *state, old += plen; if (first == '-') break; - /* Fall-through for ' ' */ + /* fallthrough */ case '+': /* --no-add does not add new lines */ if (first == '+' && state->no_add) @@ -3394,6 +3409,7 @@ static int load_patch_target(struct apply_state *state, struct strbuf *buf, const struct cache_entry *ce, struct stat *st, + struct patch *patch, const char *name, unsigned expected_mode) { @@ -3409,7 +3425,7 @@ static int load_patch_target(struct apply_state *state, } else if (has_symlink_leading_path(name, strlen(name))) { return error(_("reading from '%s' beyond a symbolic link"), name); } else { - if (read_old_data(st, name, buf)) + if (read_old_data(st, patch, name, buf)) return error(_("failed to read %s"), name); } } @@ -3442,7 +3458,7 @@ static int load_preimage(struct apply_state *state, /* We have a patched copy in memory; use that. */ strbuf_add(&buf, previous->result, previous->resultsize); } else { - status = load_patch_target(state, &buf, ce, st, + status = load_patch_target(state, &buf, ce, st, patch, patch->old_name, patch->old_mode); if (status < 0) return status; @@ -3530,7 +3546,7 @@ static int load_current(struct apply_state *state, if (verify_index_match(ce, &st)) return error(_("%s: does not match index"), name); - status = load_patch_target(state, &buf, ce, &st, name, mode); + status = load_patch_target(state, &buf, ce, &st, patch, name, mode); if (status < 0) return status; else if (status) @@ -3561,7 +3577,7 @@ static int try_threeway(struct apply_state *state, /* Preimage the patch was prepared for */ if (patch->is_new) write_sha1_file("", 0, blob_type, pre_oid.hash); - else if (get_sha1(patch->old_sha1_prefix, pre_oid.hash) || + else if (get_oid(patch->old_sha1_prefix, &pre_oid) || read_blob_object(&buf, &pre_oid, patch->old_mode)) return error(_("repository lacks the necessary blob to fall back on 3-way merge.")); @@ -3726,8 +3742,7 @@ static int check_preimage(struct apply_state *state, is_new: patch->is_new = 1; patch->is_delete = 0; - free(patch->old_name); - patch->old_name = NULL; + FREE_AND_NULL(patch->old_name); return 0; } @@ -3762,7 +3777,7 @@ static int check_to_create(struct apply_state *state, return 0; return EXISTS_IN_WORKTREE; - } else if ((errno != ENOENT) && (errno != ENOTDIR)) { + } else if (!is_missing_file_error(errno)) { return error_errno("%s", new_name); } return 0; @@ -4086,7 +4101,7 @@ static int build_fake_ancestor(struct apply_state *state, struct patch *list) else return error(_("sha1 information is lacking or " "useless for submodule %s"), name); - } else if (!get_sha1_blob(patch->old_sha1_prefix, oid.hash)) { + } else if (!get_oid_blob(patch->old_sha1_prefix, &oid)) { ; /* ok */ } else if (!patch->lines_added && !patch->lines_deleted) { /* mode-only change: update the current */ |