diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 409 |
1 files changed, 312 insertions, 97 deletions
@@ -199,8 +199,8 @@ struct emit_callback { sane_truncate_fn truncate; const char **label_path; struct diff_words_data *diff_words; + struct diff_options *opt; int *found_changesp; - FILE *file; struct strbuf *header; }; @@ -287,11 +287,19 @@ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2, ecbdata->blank_at_eof_in_postimage = (at - l2) + 1; } -static void emit_line_0(FILE *file, const char *set, const char *reset, +static void emit_line_0(struct diff_options *o, const char *set, const char *reset, int first, const char *line, int len) { int has_trailing_newline, has_trailing_carriage_return; int nofirst; + FILE *file = o->file; + + if (o->output_prefix) { + struct strbuf *msg = NULL; + msg = o->output_prefix(o, o->output_prefix_data); + assert(msg); + fwrite(msg->buf, msg->len, 1, file); + } if (len == 0) { has_trailing_newline = (first == '\n'); @@ -321,10 +329,10 @@ static void emit_line_0(FILE *file, const char *set, const char *reset, fputc('\n', file); } -static void emit_line(FILE *file, const char *set, const char *reset, +static void emit_line(struct diff_options *o, const char *set, const char *reset, const char *line, int len) { - emit_line_0(file, set, reset, line[0], line+1, len-1); + emit_line_0(o, set, reset, line[0], line+1, len-1); } static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len) @@ -346,15 +354,15 @@ static void emit_add_line(const char *reset, const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW); if (!*ws) - emit_line_0(ecbdata->file, set, reset, '+', line, len); + emit_line_0(ecbdata->opt, set, reset, '+', line, len); else if (new_blank_line_at_eof(ecbdata, line, len)) /* Blank line at EOF - paint '+' as well */ - emit_line_0(ecbdata->file, ws, reset, '+', line, len); + emit_line_0(ecbdata->opt, ws, reset, '+', line, len); else { /* Emit just the prefix, then the rest. */ - emit_line_0(ecbdata->file, set, reset, '+', "", 0); + emit_line_0(ecbdata->opt, set, reset, '+', "", 0); ws_check_emit(line, len, ecbdata->ws_rule, - ecbdata->file, set, reset, ws); + ecbdata->opt->file, set, reset, ws); } } @@ -367,6 +375,9 @@ static void emit_hunk_header(struct emit_callback *ecbdata, const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); static const char atat[2] = { '@', '@' }; const char *cp, *ep; + struct strbuf msgbuf = STRBUF_INIT; + int org_len = len; + int i = 1; /* * As a hunk header must begin with "@@ -<old>, +<new> @@", @@ -375,23 +386,42 @@ static void emit_hunk_header(struct emit_callback *ecbdata, if (len < 10 || memcmp(line, atat, 2) || !(ep = memmem(line + 2, len - 2, atat, 2))) { - emit_line(ecbdata->file, plain, reset, line, len); + emit_line(ecbdata->opt, plain, reset, line, len); return; } ep += 2; /* skip over @@ */ /* The hunk header in fraginfo color */ - emit_line(ecbdata->file, frag, reset, line, ep - line); + strbuf_add(&msgbuf, frag, strlen(frag)); + strbuf_add(&msgbuf, line, ep - line); + strbuf_add(&msgbuf, reset, strlen(reset)); + + /* + * trailing "\r\n" + */ + for ( ; i < 3; i++) + if (line[len - i] == '\r' || line[len - i] == '\n') + len--; /* blank before the func header */ for (cp = ep; ep - line < len; ep++) if (*ep != ' ' && *ep != '\t') break; - if (ep != cp) - emit_line(ecbdata->file, plain, reset, cp, ep - cp); + if (ep != cp) { + strbuf_add(&msgbuf, plain, strlen(plain)); + strbuf_add(&msgbuf, cp, ep - cp); + strbuf_add(&msgbuf, reset, strlen(reset)); + } + + if (ep < line + len) { + strbuf_add(&msgbuf, func, strlen(func)); + strbuf_add(&msgbuf, ep, line + len - ep); + strbuf_add(&msgbuf, reset, strlen(reset)); + } - if (ep < line + len) - emit_line(ecbdata->file, func, reset, ep, line + len - ep); + strbuf_add(&msgbuf, line + len, org_len - len); + emit_line(ecbdata->opt, "", "", msgbuf.buf, msgbuf.len); + strbuf_release(&msgbuf); } static struct diff_tempfile *claim_diff_tempfile(void) { @@ -451,7 +481,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb, len = endp ? (endp - data + 1) : size; if (prefix != '+') { ecb->lno_in_preimage++; - emit_line_0(ecb->file, old, reset, '-', + emit_line_0(ecb->opt, old, reset, '-', data, len); } else { ecb->lno_in_postimage++; @@ -463,7 +493,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb, if (!endp) { const char *plain = diff_get_color(ecb->color_diff, DIFF_PLAIN); - emit_line_0(ecb->file, plain, reset, '\\', + emit_line_0(ecb->opt, plain, reset, '\\', nneof, strlen(nneof)); } } @@ -487,6 +517,13 @@ static void emit_rewrite_diff(const char *name_a, char *data_one, *data_two; size_t size_one, size_two; struct emit_callback ecbdata; + char *line_prefix = ""; + struct strbuf *msgbuf; + + if (o && o->output_prefix) { + msgbuf = o->output_prefix(o, o->output_prefix_data); + line_prefix = msgbuf->buf; + } if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) { a_prefix = o->b_prefix; @@ -513,7 +550,7 @@ static void emit_rewrite_diff(const char *name_a, ecbdata.color_diff = color_diff; ecbdata.found_changesp = &o->found_changes; ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); - ecbdata.file = o->file; + ecbdata.opt = o; if (ecbdata.ws_rule & WS_BLANK_AT_EOF) { mmfile_t mf1, mf2; mf1.ptr = (char *)data_one; @@ -528,9 +565,10 @@ static void emit_rewrite_diff(const char *name_a, lc_a = count_lines(data_one, size_one); lc_b = count_lines(data_two, size_two); fprintf(o->file, - "%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -", - metainfo, a_name.buf, name_a_tab, reset, - metainfo, b_name.buf, name_b_tab, reset, fraginfo); + "%s%s--- %s%s%s\n%s%s+++ %s%s%s\n%s%s@@ -", + line_prefix, metainfo, a_name.buf, name_a_tab, reset, + line_prefix, metainfo, b_name.buf, name_b_tab, reset, + line_prefix, fraginfo); print_line_count(o->file, lc_a); fprintf(o->file, " +"); print_line_count(o->file, lc_b); @@ -589,7 +627,8 @@ struct diff_words_style diff_words_styles[] = { struct diff_words_data { struct diff_words_buffer minus, plus; const char *current_plus; - FILE *file; + int last_minus; + struct diff_options *opt; regex_t *word_regex; enum diff_words_type type; struct diff_words_style *style; @@ -598,10 +637,15 @@ struct diff_words_data { static int fn_out_diff_words_write_helper(FILE *fp, struct diff_words_style_elem *st_el, const char *newline, - size_t count, const char *buf) + size_t count, const char *buf, + const char *line_prefix) { + int print = 0; + while (count) { char *p = memchr(buf, '\n', count); + if (print) + fputs(line_prefix, fp); if (p != buf) { if (st_el->color && fputs(st_el->color, fp) < 0) return -1; @@ -619,21 +663,74 @@ static int fn_out_diff_words_write_helper(FILE *fp, return -1; count -= p + 1 - buf; buf = p + 1; + print = 1; } return 0; } +/* + * '--color-words' algorithm can be described as: + * + * 1. collect a the minus/plus lines of a diff hunk, divided into + * minus-lines and plus-lines; + * + * 2. break both minus-lines and plus-lines into words and + * place them into two mmfile_t with one word for each line; + * + * 3. use xdiff to run diff on the two mmfile_t to get the words level diff; + * + * And for the common parts of the both file, we output the plus side text. + * diff_words->current_plus is used to trace the current position of the plus file + * which printed. diff_words->last_minus is used to trace the last minus word + * printed. + * + * For '--graph' to work with '--color-words', we need to output the graph prefix + * on each line of color words output. Generally, there are two conditions on + * which we should output the prefix. + * + * 1. diff_words->last_minus == 0 && + * diff_words->current_plus == diff_words->plus.text.ptr + * + * that is: the plus text must start as a new line, and if there is no minus + * word printed, a graph prefix must be printed. + * + * 2. diff_words->current_plus > diff_words->plus.text.ptr && + * *(diff_words->current_plus - 1) == '\n' + * + * that is: a graph prefix must be printed following a '\n' + */ +static int color_words_output_graph_prefix(struct diff_words_data *diff_words) +{ + if ((diff_words->last_minus == 0 && + diff_words->current_plus == diff_words->plus.text.ptr) || + (diff_words->current_plus > diff_words->plus.text.ptr && + *(diff_words->current_plus - 1) == '\n')) { + return 1; + } else { + return 0; + } +} + static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) { struct diff_words_data *diff_words = priv; struct diff_words_style *style = diff_words->style; int minus_first, minus_len, plus_first, plus_len; const char *minus_begin, *minus_end, *plus_begin, *plus_end; + struct diff_options *opt = diff_words->opt; + struct strbuf *msgbuf; + char *line_prefix = ""; if (line[0] != '@' || parse_hunk_header(line, len, &minus_first, &minus_len, &plus_first, &plus_len)) return; + assert(opt); + if (opt->output_prefix) { + msgbuf = opt->output_prefix(opt, opt->output_prefix_data); + line_prefix = msgbuf->buf; + } + /* POSIX requires that first be decremented by one if len == 0... */ if (minus_len) { minus_begin = diff_words->minus.orig[minus_first].begin; @@ -649,21 +746,32 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) } else plus_begin = plus_end = diff_words->plus.orig[plus_first].end; - if (diff_words->current_plus != plus_begin) - fn_out_diff_words_write_helper(diff_words->file, + if (color_words_output_graph_prefix(diff_words)) { + fputs(line_prefix, diff_words->opt->file); + } + if (diff_words->current_plus != plus_begin) { + fn_out_diff_words_write_helper(diff_words->opt->file, &style->ctx, style->newline, plus_begin - diff_words->current_plus, - diff_words->current_plus); - if (minus_begin != minus_end) - fn_out_diff_words_write_helper(diff_words->file, + diff_words->current_plus, line_prefix); + if (*(plus_begin - 1) == '\n') + fputs(line_prefix, diff_words->opt->file); + } + if (minus_begin != minus_end) { + fn_out_diff_words_write_helper(diff_words->opt->file, &style->old, style->newline, - minus_end - minus_begin, minus_begin); - if (plus_begin != plus_end) - fn_out_diff_words_write_helper(diff_words->file, + minus_end - minus_begin, minus_begin, + line_prefix); + } + if (plus_begin != plus_end) { + fn_out_diff_words_write_helper(diff_words->opt->file, &style->new, style->newline, - plus_end - plus_begin, plus_begin); + plus_end - plus_begin, plus_begin, + line_prefix); + } diff_words->current_plus = plus_end; + diff_words->last_minus = minus_first; } /* This function starts looking at *begin, and returns 0 iff a word was found. */ @@ -744,16 +852,29 @@ static void diff_words_show(struct diff_words_data *diff_words) mmfile_t minus, plus; struct diff_words_style *style = diff_words->style; + struct diff_options *opt = diff_words->opt; + struct strbuf *msgbuf; + char *line_prefix = ""; + + assert(opt); + if (opt->output_prefix) { + msgbuf = opt->output_prefix(opt, opt->output_prefix_data); + line_prefix = msgbuf->buf; + } + /* special case: only removal */ if (!diff_words->plus.text.size) { - fn_out_diff_words_write_helper(diff_words->file, + fputs(line_prefix, diff_words->opt->file); + fn_out_diff_words_write_helper(diff_words->opt->file, &style->old, style->newline, - diff_words->minus.text.size, diff_words->minus.text.ptr); + diff_words->minus.text.size, + diff_words->minus.text.ptr, line_prefix); diff_words->minus.text.size = 0; return; } diff_words->current_plus = diff_words->plus.text.ptr; + diff_words->last_minus = 0; memset(&xpp, 0, sizeof(xpp)); memset(&xecfg, 0, sizeof(xecfg)); @@ -767,11 +888,15 @@ static void diff_words_show(struct diff_words_data *diff_words) free(minus.ptr); free(plus.ptr); if (diff_words->current_plus != diff_words->plus.text.ptr + - diff_words->plus.text.size) - fn_out_diff_words_write_helper(diff_words->file, + diff_words->plus.text.size) { + if (color_words_output_graph_prefix(diff_words)) + fputs(line_prefix, diff_words->opt->file); + fn_out_diff_words_write_helper(diff_words->opt->file, &style->ctx, style->newline, diff_words->plus.text.ptr + diff_words->plus.text.size - - diff_words->current_plus, diff_words->current_plus); + - diff_words->current_plus, diff_words->current_plus, + line_prefix); + } diff_words->minus.text.size = diff_words->plus.text.size = 0; } @@ -843,9 +968,17 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) const char *meta = diff_get_color(ecbdata->color_diff, DIFF_METAINFO); const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN); const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); + struct diff_options *o = ecbdata->opt; + char *line_prefix = ""; + struct strbuf *msgbuf; + + if (o && o->output_prefix) { + msgbuf = o->output_prefix(o, o->output_prefix_data); + line_prefix = msgbuf->buf; + } if (ecbdata->header) { - fprintf(ecbdata->file, "%s", ecbdata->header->buf); + fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf); strbuf_reset(ecbdata->header); ecbdata->header = NULL; } @@ -857,10 +990,10 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : ""; name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : ""; - fprintf(ecbdata->file, "%s--- %s%s%s\n", - meta, ecbdata->label_path[0], reset, name_a_tab); - fprintf(ecbdata->file, "%s+++ %s%s%s\n", - meta, ecbdata->label_path[1], reset, name_b_tab); + fprintf(ecbdata->opt->file, "%s%s--- %s%s%s\n", + line_prefix, meta, ecbdata->label_path[0], reset, name_a_tab); + fprintf(ecbdata->opt->file, "%s%s+++ %s%s%s\n", + line_prefix, meta, ecbdata->label_path[1], reset, name_b_tab); ecbdata->label_path[0] = ecbdata->label_path[1] = NULL; } @@ -877,15 +1010,15 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) find_lno(line, ecbdata); emit_hunk_header(ecbdata, line, len); if (line[len-1] != '\n') - putc('\n', ecbdata->file); + putc('\n', ecbdata->opt->file); return; } if (len < 1) { - emit_line(ecbdata->file, reset, reset, line, len); + emit_line(ecbdata->opt, reset, reset, line, len); if (ecbdata->diff_words && ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) - fputs("~\n", ecbdata->file); + fputs("~\n", ecbdata->opt->file); return; } @@ -901,11 +1034,11 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) } diff_words_flush(ecbdata); if (ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) { - emit_line(ecbdata->file, plain, reset, line, len); - fputs("~\n", ecbdata->file); + emit_line(ecbdata->opt, plain, reset, line, len); + fputs("~\n", ecbdata->opt->file); } else { /* don't print the prefix character */ - emit_line(ecbdata->file, plain, reset, line+1, len-1); + emit_line(ecbdata->opt, plain, reset, line+1, len-1); } return; } @@ -917,7 +1050,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) ecbdata->lno_in_preimage++; if (line[0] == ' ') ecbdata->lno_in_postimage++; - emit_line(ecbdata->file, color, reset, line, len); + emit_line(ecbdata->opt, color, reset, line, len); } else { ecbdata->lno_in_postimage++; emit_add_line(reset, ecbdata, line + 1, len - 1); @@ -1097,10 +1230,17 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) int total_files = data->nr; int width, name_width; const char *reset, *set, *add_c, *del_c; + const char *line_prefix = ""; + struct strbuf *msg = NULL; if (data->nr == 0) return; + if (options->output_prefix) { + msg = options->output_prefix(options, options->output_prefix_data); + line_prefix = msg->buf; + } + width = options->stat_width ? options->stat_width : 80; name_width = options->stat_name_width ? options->stat_name_width : 50; @@ -1170,6 +1310,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) } if (data->files[i]->is_binary) { + fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); fprintf(options->file, " Bin "); fprintf(options->file, "%s%"PRIuMAX"%s", @@ -1182,6 +1323,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) continue; } else if (data->files[i]->is_unmerged) { + fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); fprintf(options->file, " Unmerged\n"); continue; @@ -1204,6 +1346,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) add = scale_linear(add, width, max_change); del = scale_linear(del, width, max_change); } + fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); fprintf(options->file, "%5"PRIuMAX"%s", added + deleted, added + deleted ? " " : ""); @@ -1211,6 +1354,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) show_graph(options->file, '-', del, del_c, reset); fprintf(options->file, "\n"); } + fprintf(options->file, "%s", line_prefix); fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n", total_files, adds, dels); @@ -1237,6 +1381,12 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option } } } + if (options->output_prefix) { + struct strbuf *msg = NULL; + msg = options->output_prefix(options, + options->output_prefix_data); + fprintf(options->file, "%s", msg->buf); + } fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n", total_files, adds, dels); } @@ -1251,6 +1401,13 @@ static void show_numstat(struct diffstat_t *data, struct diff_options *options) for (i = 0; i < data->nr; i++) { struct diffstat_file *file = data->files[i]; + if (options->output_prefix) { + struct strbuf *msg = NULL; + msg = options->output_prefix(options, + options->output_prefix_data); + fprintf(options->file, "%s", msg->buf); + } + if (file->is_binary) fprintf(options->file, "-\t-\t"); else @@ -1286,10 +1443,18 @@ struct dirstat_dir { int alloc, nr, percent, cumulative; }; -static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long changed, const char *base, int baselen) +static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir, + unsigned long changed, const char *base, int baselen) { unsigned long this_dir = 0; unsigned int sources = 0; + const char *line_prefix = ""; + struct strbuf *msg = NULL; + + if (opt->output_prefix) { + msg = opt->output_prefix(opt, opt->output_prefix_data); + line_prefix = msg->buf; + } while (dir->nr) { struct dirstat_file *f = dir->files; @@ -1304,7 +1469,7 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch slash = strchr(f->name + baselen, '/'); if (slash) { int newbaselen = slash + 1 - f->name; - this = gather_dirstat(file, dir, changed, f->name, newbaselen); + this = gather_dirstat(opt, dir, changed, f->name, newbaselen); sources++; } else { this = f->changed; @@ -1326,7 +1491,8 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch if (permille) { int percent = permille / 10; if (percent >= dir->percent) { - fprintf(file, "%4d.%01d%% %.*s\n", percent, permille % 10, baselen, base); + fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix, + percent, permille % 10, baselen, base); if (!dir->cumulative) return 0; } @@ -1406,7 +1572,7 @@ static void show_dirstat(struct diff_options *options) /* Show all directories with more than x% of the changes */ qsort(dir.files, dir.nr, sizeof(dir.files[0]), dirstat_compare); - gather_dirstat(options->file, &dir, changed, "", 0); + gather_dirstat(options, &dir, changed, "", 0); } static void free_diffstat_info(struct diffstat_t *diffstat) @@ -1464,6 +1630,15 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) const char *reset = diff_get_color(color_diff, DIFF_RESET); const char *set = diff_get_color(color_diff, DIFF_FILE_NEW); char *err; + char *line_prefix = ""; + struct strbuf *msgbuf; + + assert(data->o); + if (data->o->output_prefix) { + msgbuf = data->o->output_prefix(data->o, + data->o->output_prefix_data); + line_prefix = msgbuf->buf; + } if (line[0] == '+') { unsigned bad; @@ -1471,18 +1646,18 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) if (is_conflict_marker(line + 1, marker_size, len - 1)) { data->status |= 1; fprintf(data->o->file, - "%s:%d: leftover conflict marker\n", - data->filename, data->lineno); + "%s%s:%d: leftover conflict marker\n", + line_prefix, data->filename, data->lineno); } bad = ws_check(line + 1, len - 1, data->ws_rule); if (!bad) return; data->status |= bad; err = whitespace_error_string(bad); - fprintf(data->o->file, "%s:%d: %s.\n", - data->filename, data->lineno, err); + fprintf(data->o->file, "%s%s:%d: %s.\n", + line_prefix, data->filename, data->lineno, err); free(err); - emit_line(data->o->file, set, reset, line, 1); + emit_line(data->o, set, reset, line, 1); ws_check_emit(line + 1, len - 1, data->ws_rule, data->o->file, set, reset, ws); } else if (line[0] == ' ') { @@ -1520,7 +1695,7 @@ static unsigned char *deflate_it(char *data, return deflated; } -static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two) +static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix) { void *cp; void *delta; @@ -1549,13 +1724,13 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two) } if (delta && delta_size < deflate_size) { - fprintf(file, "delta %lu\n", orig_size); + fprintf(file, "%sdelta %lu\n", prefix, orig_size); free(deflated); data = delta; data_size = delta_size; } else { - fprintf(file, "literal %lu\n", two->size); + fprintf(file, "%sliteral %lu\n", prefix, two->size); free(delta); data = deflated; data_size = deflate_size; @@ -1573,18 +1748,19 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two) line[0] = bytes - 26 + 'a' - 1; encode_85(line + 1, cp, bytes); cp = (char *) cp + bytes; + fprintf(file, "%s", prefix); fputs(line, file); fputc('\n', file); } - fprintf(file, "\n"); + fprintf(file, "%s\n", prefix); free(data); } -static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two) +static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix) { - fprintf(file, "GIT binary patch\n"); - emit_binary_diff_body(file, one, two); - emit_binary_diff_body(file, two, one); + fprintf(file, "%sGIT binary patch\n", prefix); + emit_binary_diff_body(file, one, two, prefix); + emit_binary_diff_body(file, two, one, prefix); } static void diff_filespec_load_driver(struct diff_filespec *one) @@ -1673,6 +1849,13 @@ static void builtin_diff(const char *name_a, struct userdiff_driver *textconv_one = NULL; struct userdiff_driver *textconv_two = NULL; struct strbuf header = STRBUF_INIT; + struct strbuf *msgbuf; + char *line_prefix = ""; + + if (o->output_prefix) { + msgbuf = o->output_prefix(o, o->output_prefix_data); + line_prefix = msgbuf->buf; + } if (DIFF_OPT_TST(o, SUBMODULE_LOG) && (!one->mode || S_ISGITLINK(one->mode)) && @@ -1707,22 +1890,22 @@ static void builtin_diff(const char *name_a, b_two = quote_two(b_prefix, name_b + (*name_b == '/')); lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; - strbuf_addf(&header, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); + strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset); if (lbl[0][0] == '/') { /* /dev/null */ - strbuf_addf(&header, "%snew file mode %06o%s\n", set, two->mode, reset); + strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset); if (xfrm_msg) strbuf_addstr(&header, xfrm_msg); } else if (lbl[1][0] == '/') { - strbuf_addf(&header, "%sdeleted file mode %06o%s\n", set, one->mode, reset); + strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset); if (xfrm_msg) strbuf_addstr(&header, xfrm_msg); } else { if (one->mode != two->mode) { - strbuf_addf(&header, "%sold mode %06o%s\n", set, one->mode, reset); - strbuf_addf(&header, "%snew mode %06o%s\n", set, two->mode, reset); + strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset); + strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset); } if (xfrm_msg) strbuf_addstr(&header, xfrm_msg); @@ -1757,10 +1940,10 @@ static void builtin_diff(const char *name_a, fprintf(o->file, "%s", header.buf); strbuf_reset(&header); if (DIFF_OPT_TST(o, BINARY)) - emit_binary_diff(o->file, &mf1, &mf2); + emit_binary_diff(o->file, &mf1, &mf2, line_prefix); else - fprintf(o->file, "Binary files %s and %s differ\n", - lbl[0], lbl[1]); + fprintf(o->file, "%sBinary files %s and %s differ\n", + line_prefix, lbl[0], lbl[1]); o->found_changes = 1; } else { @@ -1792,7 +1975,7 @@ static void builtin_diff(const char *name_a, ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); if (ecbdata.ws_rule & WS_BLANK_AT_EOF) check_blank_at_eof(&mf1, &mf2, &ecbdata); - ecbdata.file = o->file; + ecbdata.opt = o; ecbdata.header = header.len ? &header : NULL; xpp.flags = o->xdl_opts; xecfg.ctxlen = o->context; @@ -1811,8 +1994,8 @@ static void builtin_diff(const char *name_a, ecbdata.diff_words = xcalloc(1, sizeof(struct diff_words_data)); - ecbdata.diff_words->file = o->file; ecbdata.diff_words->type = o->word_diff; + ecbdata.diff_words->opt = o; if (!o->word_regex) o->word_regex = userdiff_word_regex(one); if (!o->word_regex) @@ -2389,30 +2572,41 @@ static void fill_metainfo(struct strbuf *msg, { const char *set = diff_get_color(use_color, DIFF_METAINFO); const char *reset = diff_get_color(use_color, DIFF_RESET); + struct strbuf *msgbuf; + char *line_prefix = ""; + + if (o->output_prefix) { + msgbuf = o->output_prefix(o, o->output_prefix_data); + line_prefix = msgbuf->buf; + } strbuf_init(msg, PATH_MAX * 2 + 300); switch (p->status) { case DIFF_STATUS_COPIED: - strbuf_addf(msg, "%ssimilarity index %d%%", - set, similarity_index(p)); - strbuf_addf(msg, "%s\n%scopy from ", reset, set); + strbuf_addf(msg, "%s%ssimilarity index %d%%", + line_prefix, set, similarity_index(p)); + strbuf_addf(msg, "%s\n%s%scopy from ", + reset, line_prefix, set); quote_c_style(name, msg, NULL, 0); - strbuf_addf(msg, "%s\n%scopy to ", reset, set); + strbuf_addf(msg, "%s\n%s%scopy to ", reset, line_prefix, set); quote_c_style(other, msg, NULL, 0); strbuf_addf(msg, "%s\n", reset); break; case DIFF_STATUS_RENAMED: - strbuf_addf(msg, "%ssimilarity index %d%%", - set, similarity_index(p)); - strbuf_addf(msg, "%s\n%srename from ", reset, set); + strbuf_addf(msg, "%s%ssimilarity index %d%%", + line_prefix, set, similarity_index(p)); + strbuf_addf(msg, "%s\n%s%srename from ", + reset, line_prefix, set); quote_c_style(name, msg, NULL, 0); - strbuf_addf(msg, "%s\n%srename to ", reset, set); + strbuf_addf(msg, "%s\n%s%srename to ", + reset, line_prefix, set); quote_c_style(other, msg, NULL, 0); strbuf_addf(msg, "%s\n", reset); break; case DIFF_STATUS_MODIFIED: if (p->score) { - strbuf_addf(msg, "%sdissimilarity index %d%%%s\n", + strbuf_addf(msg, "%s%sdissimilarity index %d%%%s\n", + line_prefix, set, similarity_index(p), reset); break; } @@ -2430,7 +2624,8 @@ static void fill_metainfo(struct strbuf *msg, (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two))) abbrev = 40; } - strbuf_addf(msg, "%sindex %s..", set, + strbuf_addf(msg, "%s%sindex %s..", set, + line_prefix, find_unique_abbrev(one->sha1, abbrev)); strbuf_addstr(msg, find_unique_abbrev(two->sha1, abbrev)); if (one->mode == two->mode) @@ -3140,6 +3335,11 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt) { int line_termination = opt->line_termination; int inter_name_termination = line_termination ? '\t' : '\0'; + if (opt->output_prefix) { + struct strbuf *msg = NULL; + msg = opt->output_prefix(opt, opt->output_prefix_data); + fprintf(opt->file, "%s", msg->buf); + } if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) { fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode, @@ -3385,48 +3585,62 @@ static void show_file_mode_name(FILE *file, const char *newdelete, struct diff_f } -static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name) +static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name, + const char *line_prefix) { if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) { - fprintf(file, " mode change %06o => %06o%c", p->one->mode, p->two->mode, - show_name ? ' ' : '\n'); + fprintf(file, "%s mode change %06o => %06o%c", line_prefix, p->one->mode, + p->two->mode, show_name ? ' ' : '\n'); if (show_name) { write_name_quoted(p->two->path, file, '\n'); } } } -static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p) +static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p, + const char *line_prefix) { char *names = pprint_rename(p->one->path, p->two->path); fprintf(file, " %s %s (%d%%)\n", renamecopy, names, similarity_index(p)); free(names); - show_mode_change(file, p, 0); + show_mode_change(file, p, 0, line_prefix); } -static void diff_summary(FILE *file, struct diff_filepair *p) +static void diff_summary(struct diff_options *opt, struct diff_filepair *p) { + FILE *file = opt->file; + char *line_prefix = ""; + + if (opt->output_prefix) { + struct strbuf *buf = opt->output_prefix(opt, opt->output_prefix_data); + line_prefix = buf->buf; + } + switch(p->status) { case DIFF_STATUS_DELETED: + fputs(line_prefix, file); show_file_mode_name(file, "delete", p->one); break; case DIFF_STATUS_ADDED: + fputs(line_prefix, file); show_file_mode_name(file, "create", p->two); break; case DIFF_STATUS_COPIED: - show_rename_copy(file, "copy", p); + fputs(line_prefix, file); + show_rename_copy(file, "copy", p, line_prefix); break; case DIFF_STATUS_RENAMED: - show_rename_copy(file, "rename", p); + fputs(line_prefix, file); + show_rename_copy(file, "rename", p, line_prefix); break; default: if (p->score) { - fputs(" rewrite ", file); + fprintf(file, "%s rewrite ", line_prefix); write_name_quoted(p->two->path, file, ' '); fprintf(file, "(%d%%)\n", similarity_index(p)); } - show_mode_change(file, p, !p->score); + show_mode_change(file, p, !p->score, line_prefix); break; } } @@ -3635,8 +3849,9 @@ void diff_flush(struct diff_options *options) show_dirstat(options); if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) { - for (i = 0; i < q->nr; i++) - diff_summary(options->file, q->queue[i]); + for (i = 0; i < q->nr; i++) { + diff_summary(options, q->queue[i]); + } separator++; } |