diff options
Diffstat (limited to 'diff.c')
-rw-r--r-- | diff.c | 758 |
1 files changed, 530 insertions, 228 deletions
@@ -13,6 +13,7 @@ #include "utf8.h" #include "userdiff.h" #include "sigchain.h" +#include "submodule.h" #ifdef NO_FAST_WORKING_DIRECTORY #define FAST_WORKING_DIRECTORY 0 @@ -30,14 +31,15 @@ int diff_auto_refresh_index = 1; static int diff_mnemonic_prefix; static char diff_colors[][COLOR_MAXLEN] = { - "\033[m", /* reset */ - "", /* PLAIN (normal) */ - "\033[1m", /* METAINFO (bold) */ - "\033[36m", /* FRAGINFO (cyan) */ - "\033[31m", /* OLD (red) */ - "\033[32m", /* NEW (green) */ - "\033[33m", /* COMMIT (yellow) */ - "\033[41m", /* WHITESPACE (red background) */ + GIT_COLOR_RESET, + GIT_COLOR_NORMAL, /* PLAIN */ + GIT_COLOR_BOLD, /* METAINFO */ + GIT_COLOR_CYAN, /* FRAGINFO */ + GIT_COLOR_RED, /* OLD */ + GIT_COLOR_GREEN, /* NEW */ + GIT_COLOR_YELLOW, /* COMMIT */ + GIT_COLOR_BG_RED, /* WHITESPACE */ + GIT_COLOR_NORMAL, /* FUNCINFO */ }; static void diff_filespec_load_driver(struct diff_filespec *one); @@ -59,7 +61,18 @@ static int parse_diff_color_slot(const char *var, int ofs) return DIFF_COMMIT; if (!strcasecmp(var+ofs, "whitespace")) return DIFF_WHITESPACE; - die("bad config variable '%s'", var); + if (!strcasecmp(var+ofs, "func")) + return DIFF_FUNCINFO; + return -1; +} + +static int git_config_rename(const char *var, const char *value) +{ + if (!value) + return DIFF_DETECT_RENAME; + if (!strcasecmp(value, "copies") || !strcasecmp(value, "copy")) + return DIFF_DETECT_COPY; + return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0; } /* @@ -75,13 +88,7 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) return 0; } if (!strcmp(var, "diff.renames")) { - if (!value) - diff_detect_rename_default = DIFF_DETECT_RENAME; - else if (!strcasecmp(value, "copies") || - !strcasecmp(value, "copy")) - diff_detect_rename_default = DIFF_DETECT_COPY; - else if (git_config_bool(var,value)) - diff_detect_rename_default = DIFF_DETECT_RENAME; + diff_detect_rename_default = git_config_rename(var, value); return 0; } if (!strcmp(var, "diff.autorefreshindex")) { @@ -115,6 +122,8 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) { int slot = parse_diff_color_slot(var, 11); + if (slot < 0) + return 0; if (!value) return config_error_nonbool(var); color_parse(value, var, diff_colors[slot]); @@ -171,6 +180,213 @@ static struct diff_tempfile { char tmp_path[PATH_MAX]; } diff_temp[2]; +typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len); + +struct emit_callback { + int color_diff; + unsigned ws_rule; + int blank_at_eof_in_preimage; + int blank_at_eof_in_postimage; + int lno_in_preimage; + int lno_in_postimage; + sane_truncate_fn truncate; + const char **label_path; + struct diff_words_data *diff_words; + int *found_changesp; + FILE *file; + struct strbuf *header; +}; + +static int count_lines(const char *data, int size) +{ + int count, ch, completely_empty = 1, nl_just_seen = 0; + count = 0; + while (0 < size--) { + ch = *data++; + if (ch == '\n') { + count++; + nl_just_seen = 1; + completely_empty = 0; + } + else { + nl_just_seen = 0; + completely_empty = 0; + } + } + if (completely_empty) + return 0; + if (!nl_just_seen) + count++; /* no trailing newline */ + return count; +} + +static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) +{ + if (!DIFF_FILE_VALID(one)) { + mf->ptr = (char *)""; /* does not matter */ + mf->size = 0; + return 0; + } + else if (diff_populate_filespec(one, 0)) + return -1; + + mf->ptr = one->data; + mf->size = one->size; + return 0; +} + +static int count_trailing_blank(mmfile_t *mf, unsigned ws_rule) +{ + char *ptr = mf->ptr; + long size = mf->size; + int cnt = 0; + + if (!size) + return cnt; + ptr += size - 1; /* pointing at the very end */ + if (*ptr != '\n') + ; /* incomplete line */ + else + ptr--; /* skip the last LF */ + while (mf->ptr < ptr) { + char *prev_eol; + for (prev_eol = ptr; mf->ptr <= prev_eol; prev_eol--) + if (*prev_eol == '\n') + break; + if (!ws_blank_line(prev_eol + 1, ptr - prev_eol, ws_rule)) + break; + cnt++; + ptr = prev_eol - 1; + } + return cnt; +} + +static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2, + struct emit_callback *ecbdata) +{ + int l1, l2, at; + unsigned ws_rule = ecbdata->ws_rule; + l1 = count_trailing_blank(mf1, ws_rule); + l2 = count_trailing_blank(mf2, ws_rule); + if (l2 <= l1) { + ecbdata->blank_at_eof_in_preimage = 0; + ecbdata->blank_at_eof_in_postimage = 0; + return; + } + at = count_lines(mf1->ptr, mf1->size); + ecbdata->blank_at_eof_in_preimage = (at - l1) + 1; + + at = count_lines(mf2->ptr, mf2->size); + ecbdata->blank_at_eof_in_postimage = (at - l2) + 1; +} + +static void emit_line_0(FILE *file, const char *set, const char *reset, + int first, const char *line, int len) +{ + int has_trailing_newline, has_trailing_carriage_return; + int nofirst; + + if (len == 0) { + has_trailing_newline = (first == '\n'); + has_trailing_carriage_return = (!has_trailing_newline && + (first == '\r')); + nofirst = has_trailing_newline || has_trailing_carriage_return; + } else { + has_trailing_newline = (len > 0 && line[len-1] == '\n'); + if (has_trailing_newline) + len--; + has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); + if (has_trailing_carriage_return) + len--; + nofirst = 0; + } + + if (len || !nofirst) { + fputs(set, file); + if (!nofirst) + fputc(first, file); + fwrite(line, len, 1, file); + fputs(reset, file); + } + if (has_trailing_carriage_return) + fputc('\r', file); + if (has_trailing_newline) + fputc('\n', file); +} + +static void emit_line(FILE *file, const char *set, const char *reset, + const char *line, int len) +{ + emit_line_0(file, set, reset, line[0], line+1, len-1); +} + +static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len) +{ + if (!((ecbdata->ws_rule & WS_BLANK_AT_EOF) && + ecbdata->blank_at_eof_in_preimage && + ecbdata->blank_at_eof_in_postimage && + ecbdata->blank_at_eof_in_preimage <= ecbdata->lno_in_preimage && + ecbdata->blank_at_eof_in_postimage <= ecbdata->lno_in_postimage)) + return 0; + return ws_blank_line(line, len, ecbdata->ws_rule); +} + +static void emit_add_line(const char *reset, + struct emit_callback *ecbdata, + const char *line, int len) +{ + const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE); + const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW); + + if (!*ws) + emit_line_0(ecbdata->file, 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); + else { + /* Emit just the prefix, then the rest. */ + emit_line_0(ecbdata->file, set, reset, '+', "", 0); + ws_check_emit(line, len, ecbdata->ws_rule, + ecbdata->file, set, reset, ws); + } +} + +static void emit_hunk_header(struct emit_callback *ecbdata, + const char *line, int len) +{ + const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN); + const char *frag = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO); + const char *func = diff_get_color(ecbdata->color_diff, DIFF_FUNCINFO); + const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); + static const char atat[2] = { '@', '@' }; + const char *cp, *ep; + + /* + * As a hunk header must begin with "@@ -<old>, +<new> @@", + * it always is at least 10 bytes long. + */ + if (len < 10 || + memcmp(line, atat, 2) || + !(ep = memmem(line + 2, len - 2, atat, 2))) { + emit_line(ecbdata->file, plain, reset, line, len); + return; + } + ep += 2; /* skip over @@ */ + + /* The hunk header in fraginfo color */ + emit_line(ecbdata->file, frag, reset, line, ep - line); + + /* 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 < line + len) + emit_line(ecbdata->file, func, reset, ep, line + len - ep); +} + static struct diff_tempfile *claim_diff_tempfile(void) { int i; for (i = 0; i < ARRAY_SIZE(diff_temp); i++) @@ -186,7 +402,7 @@ static void remove_tempfile(void) int i; for (i = 0; i < ARRAY_SIZE(diff_temp); i++) { if (diff_temp[i].name == diff_temp[i].tmp_path) - unlink(diff_temp[i].name); + unlink_or_warn(diff_temp[i].name); diff_temp[i].name = NULL; } } @@ -198,29 +414,6 @@ static void remove_tempfile_on_signal(int signo) raise(signo); } -static int count_lines(const char *data, int size) -{ - int count, ch, completely_empty = 1, nl_just_seen = 0; - count = 0; - while (0 < size--) { - ch = *data++; - if (ch == '\n') { - count++; - nl_just_seen = 1; - completely_empty = 0; - } - else { - nl_just_seen = 0; - completely_empty = 0; - } - } - if (completely_empty) - return 0; - if (!nl_just_seen) - count++; /* no trailing newline */ - return count; -} - static void print_line_count(FILE *file, int count) { switch (count) { @@ -236,26 +429,36 @@ static void print_line_count(FILE *file, int count) } } -static void copy_file_with_prefix(FILE *file, - int prefix, const char *data, int size, - const char *set, const char *reset) +static void emit_rewrite_lines(struct emit_callback *ecb, + int prefix, const char *data, int size) { - int ch, nl_just_seen = 1; - while (0 < size--) { - ch = *data++; - if (nl_just_seen) { - fputs(set, file); - putc(prefix, file); + const char *endp = NULL; + static const char *nneof = " No newline at end of file\n"; + const char *old = diff_get_color(ecb->color_diff, DIFF_FILE_OLD); + const char *reset = diff_get_color(ecb->color_diff, DIFF_RESET); + + while (0 < size) { + int len; + + endp = memchr(data, '\n', size); + len = endp ? (endp - data + 1) : size; + if (prefix != '+') { + ecb->lno_in_preimage++; + emit_line_0(ecb->file, old, reset, '-', + data, len); + } else { + ecb->lno_in_postimage++; + emit_add_line(reset, ecb, data, len); } - if (ch == '\n') { - nl_just_seen = 1; - fputs(reset, file); - } else - nl_just_seen = 0; - putc(ch, file); + size -= len; + data += len; + } + if (!endp) { + const char *plain = diff_get_color(ecb->color_diff, + DIFF_PLAIN); + emit_line_0(ecb->file, plain, reset, '\\', + nneof, strlen(nneof)); } - if (!nl_just_seen) - fprintf(file, "%s\n\\ No newline at end of file\n", reset); } static void emit_rewrite_diff(const char *name_a, @@ -271,13 +474,12 @@ static void emit_rewrite_diff(const char *name_a, const char *name_a_tab, *name_b_tab; const char *metainfo = diff_get_color(color_diff, DIFF_METAINFO); const char *fraginfo = diff_get_color(color_diff, DIFF_FRAGINFO); - const char *old = diff_get_color(color_diff, DIFF_FILE_OLD); - const char *new = diff_get_color(color_diff, DIFF_FILE_NEW); const char *reset = diff_get_color(color_diff, DIFF_RESET); static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT; const char *a_prefix, *b_prefix; const char *data_one, *data_two; size_t size_one, size_two; + struct emit_callback ecbdata; if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) { a_prefix = o->b_prefix; @@ -318,6 +520,22 @@ static void emit_rewrite_diff(const char *name_a, size_two = two->size; } + memset(&ecbdata, 0, sizeof(ecbdata)); + 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; + if (ecbdata.ws_rule & WS_BLANK_AT_EOF) { + mmfile_t mf1, mf2; + mf1.ptr = (char *)data_one; + mf2.ptr = (char *)data_two; + mf1.size = size_one; + mf2.size = size_two; + check_blank_at_eof(&mf1, &mf2, &ecbdata); + } + ecbdata.lno_in_preimage = 1; + ecbdata.lno_in_postimage = 1; + lc_a = count_lines(data_one, size_one); lc_b = count_lines(data_two, size_two); fprintf(o->file, @@ -329,24 +547,9 @@ static void emit_rewrite_diff(const char *name_a, print_line_count(o->file, lc_b); fprintf(o->file, " @@%s\n", reset); if (lc_a) - copy_file_with_prefix(o->file, '-', data_one, size_one, old, reset); + emit_rewrite_lines(&ecbdata, '-', data_one, size_one); if (lc_b) - copy_file_with_prefix(o->file, '+', data_two, size_two, new, reset); -} - -static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) -{ - if (!DIFF_FILE_VALID(one)) { - mf->ptr = (char *)""; /* does not matter */ - mf->size = 0; - return 0; - } - else if (diff_populate_filespec(one, 0)) - return -1; - - mf->ptr = one->data; - mf->size = one->size; - return 0; + emit_rewrite_lines(&ecbdata, '+', data_two, size_two); } struct diff_words_buffer { @@ -526,26 +729,18 @@ static void diff_words_show(struct diff_words_data *diff_words) diff_words->minus.text.size = diff_words->plus.text.size = 0; } -typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len); - -struct emit_callback { - int nparents, color_diff; - unsigned ws_rule; - sane_truncate_fn truncate; - const char **label_path; - struct diff_words_data *diff_words; - int *found_changesp; - FILE *file; -}; +/* In "color-words" mode, show word-diff of words accumulated in the buffer */ +static void diff_words_flush(struct emit_callback *ecbdata) +{ + if (ecbdata->diff_words->minus.text.size || + ecbdata->diff_words->plus.text.size) + diff_words_show(ecbdata->diff_words); +} static void free_diff_words_data(struct emit_callback *ecbdata) { if (ecbdata->diff_words) { - /* flush buffers */ - if (ecbdata->diff_words->minus.text.size || - ecbdata->diff_words->plus.text.size) - diff_words_show(ecbdata->diff_words); - + diff_words_flush(ecbdata); free (ecbdata->diff_words->minus.text.ptr); free (ecbdata->diff_words->minus.orig); free (ecbdata->diff_words->plus.text.ptr); @@ -563,42 +758,6 @@ const char *diff_get_color(int diff_use_color, enum color_diff ix) return ""; } -static void emit_line(FILE *file, const char *set, const char *reset, const char *line, int len) -{ - int has_trailing_newline, has_trailing_carriage_return; - - has_trailing_newline = (len > 0 && line[len-1] == '\n'); - if (has_trailing_newline) - len--; - has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); - if (has_trailing_carriage_return) - len--; - - fputs(set, file); - fwrite(line, len, 1, file); - fputs(reset, file); - if (has_trailing_carriage_return) - fputc('\r', file); - if (has_trailing_newline) - fputc('\n', file); -} - -static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len) -{ - const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE); - const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW); - - if (!*ws) - emit_line(ecbdata->file, set, reset, line, len); - else { - /* Emit just the prefix, then the rest. */ - emit_line(ecbdata->file, set, reset, line, ecbdata->nparents); - ws_check_emit(line + ecbdata->nparents, - len - ecbdata->nparents, ecbdata->ws_rule, - ecbdata->file, set, reset, ws); - } -} - static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len) { const char *cp; @@ -617,15 +776,33 @@ static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, u return allot - l; } +static void find_lno(const char *line, struct emit_callback *ecbdata) +{ + const char *p; + ecbdata->lno_in_preimage = 0; + ecbdata->lno_in_postimage = 0; + p = strchr(line, '-'); + if (!p) + return; /* cannot happen */ + ecbdata->lno_in_preimage = strtol(p + 1, NULL, 10); + p = strchr(p, '+'); + if (!p) + return; /* cannot happen */ + ecbdata->lno_in_postimage = strtol(p + 1, NULL, 10); +} + static void fn_out_consume(void *priv, char *line, unsigned long len) { - int i; - int color; struct emit_callback *ecbdata = priv; 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); + if (ecbdata->header) { + fprintf(ecbdata->file, "%s", ecbdata->header->buf); + strbuf_reset(ecbdata->header); + ecbdata->header = NULL; + } *(ecbdata->found_changesp) = 1; if (ecbdata->label_path[0]) { @@ -647,31 +824,22 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) len = 1; } - /* This is not really necessary for now because - * this codepath only deals with two-way diffs. - */ - for (i = 0; i < len && line[i] == '@'; i++) - ; - if (2 <= i && i < len && line[i] == ' ') { - ecbdata->nparents = i - 1; + if (line[0] == '@') { + if (ecbdata->diff_words) + diff_words_flush(ecbdata); len = sane_truncate_line(ecbdata, line, len); - emit_line(ecbdata->file, - diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO), - reset, line, len); + find_lno(line, ecbdata); + emit_hunk_header(ecbdata, line, len); if (line[len-1] != '\n') putc('\n', ecbdata->file); return; } - if (len < ecbdata->nparents) { + if (len < 1) { emit_line(ecbdata->file, reset, reset, line, len); return; } - color = DIFF_PLAIN; - if (ecbdata->diff_words && ecbdata->nparents != 1) - /* fall back to normal diff */ - free_diff_words_data(ecbdata); if (ecbdata->diff_words) { if (line[0] == '-') { diff_words_append(line, len, @@ -682,28 +850,25 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) &ecbdata->diff_words->plus); return; } - if (ecbdata->diff_words->minus.text.size || - ecbdata->diff_words->plus.text.size) - diff_words_show(ecbdata->diff_words); + diff_words_flush(ecbdata); line++; len--; emit_line(ecbdata->file, plain, reset, line, len); return; } - for (i = 0; i < ecbdata->nparents && len; i++) { - if (line[i] == '-') - color = DIFF_FILE_OLD; - else if (line[i] == '+') - color = DIFF_FILE_NEW; - } - if (color != DIFF_FILE_NEW) { - emit_line(ecbdata->file, - diff_get_color(ecbdata->color_diff, color), - reset, line, len); - return; + if (line[0] != '+') { + const char *color = + diff_get_color(ecbdata->color_diff, + line[0] == '-' ? DIFF_FILE_OLD : DIFF_PLAIN); + ecbdata->lno_in_preimage++; + if (line[0] == ' ') + ecbdata->lno_in_postimage++; + emit_line(ecbdata->file, color, reset, line, len); + } else { + ecbdata->lno_in_postimage++; + emit_add_line(reset, ecbdata, line + 1, len - 1); } - emit_add_line(reset, ecbdata, line, len); } static char *pprint_rename(const char *a, const char *b) @@ -836,10 +1001,9 @@ static int scale_linear(int it, int width, int max_change) } static void show_name(FILE *file, - const char *prefix, const char *name, int len, - const char *reset, const char *set) + const char *prefix, const char *name, int len) { - fprintf(file, " %s%s%-*s%s |", set, prefix, len, name, reset); + fprintf(file, " %s%-*s |", prefix, len, name); } static void show_graph(FILE *file, char ch, int cnt, const char *set, const char *reset) @@ -873,9 +1037,9 @@ static void fill_print_name(struct diffstat_file *file) file->print_name = pname; } -static void show_stats(struct diffstat_t* data, struct diff_options *options) +static void show_stats(struct diffstat_t *data, struct diff_options *options) { - int i, len, add, del, total, adds = 0, dels = 0; + int i, len, add, del, adds = 0, dels = 0; int max_change = 0, max_len = 0; int total_files = data->nr; int width, name_width; @@ -953,7 +1117,7 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options) } if (data->files[i]->is_binary) { - show_name(options->file, prefix, name, len, reset, set); + show_name(options->file, prefix, name, len); fprintf(options->file, " Bin "); fprintf(options->file, "%s%d%s", del_c, deleted, reset); fprintf(options->file, " -> "); @@ -963,7 +1127,7 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options) continue; } else if (data->files[i]->is_unmerged) { - show_name(options->file, prefix, name, len, reset, set); + show_name(options->file, prefix, name, len); fprintf(options->file, " Unmerged\n"); continue; } @@ -978,16 +1142,14 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options) */ add = added; del = deleted; - total = add + del; adds += add; dels += del; if (width <= max_change) { add = scale_linear(add, width, max_change); del = scale_linear(del, width, max_change); - total = add + del; } - show_name(options->file, prefix, name, len, reset, set); + show_name(options->file, prefix, name, len); fprintf(options->file, "%5d%s", added + deleted, added + deleted ? " " : ""); show_graph(options->file, '+', add, add_c, reset); @@ -995,11 +1157,11 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options) fprintf(options->file, "\n"); } fprintf(options->file, - "%s %d files changed, %d insertions(+), %d deletions(-)%s\n", - set, total_files, adds, dels, reset); + " %d files changed, %d insertions(+), %d deletions(-)\n", + total_files, adds, dels); } -static void show_shortstats(struct diffstat_t* data, struct diff_options *options) +static void show_shortstats(struct diffstat_t *data, struct diff_options *options) { int i, adds = 0, dels = 0, total_files = data->nr; @@ -1024,7 +1186,7 @@ static void show_shortstats(struct diffstat_t* data, struct diff_options *option total_files, adds, dels); } -static void show_numstat(struct diffstat_t* data, struct diff_options *options) +static void show_numstat(struct diffstat_t *data, struct diff_options *options) { int i; @@ -1211,7 +1373,6 @@ struct checkdiff_t { struct diff_options *o; unsigned ws_rule; unsigned status; - int trailing_blanks_start; }; static int is_conflict_marker(const char *line, unsigned long len) @@ -1255,10 +1416,6 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) if (line[0] == '+') { unsigned bad; data->lineno++; - if (!ws_blank_line(line + 1, len - 1, data->ws_rule)) - data->trailing_blanks_start = 0; - else if (!data->trailing_blanks_start) - data->trailing_blanks_start = data->lineno; if (is_conflict_marker(line + 1, len - 1)) { data->status |= 1; fprintf(data->o->file, @@ -1278,14 +1435,12 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) data->o->file, set, reset, ws); } else if (line[0] == ' ') { data->lineno++; - data->trailing_blanks_start = 0; } else if (line[0] == '@') { char *plus = strchr(line, '+'); if (plus) data->lineno = strtol(plus, NULL, 10) - 1; else die("invalid diff"); - data->trailing_blanks_start = 0; } } @@ -1452,6 +1607,18 @@ static void builtin_diff(const char *name_a, const char *reset = diff_get_color_opt(o, DIFF_RESET); const char *a_prefix, *b_prefix; const char *textconv_one = NULL, *textconv_two = NULL; + struct strbuf header = STRBUF_INIT; + + if (DIFF_OPT_TST(o, SUBMODULE_LOG) && + (!one->mode || S_ISGITLINK(one->mode)) && + (!two->mode || S_ISGITLINK(two->mode))) { + const char *del = diff_get_color_opt(o, DIFF_FILE_OLD); + const char *add = diff_get_color_opt(o, DIFF_FILE_NEW); + show_submodule_summary(o->file, one ? one->path : two->path, + one->sha1, two->sha1, two->dirty_submodule, + del, add, reset); + return; + } if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) { textconv_one = get_textconv(one); @@ -1475,25 +1642,26 @@ 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"; - fprintf(o->file, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); + strbuf_addf(&header, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); if (lbl[0][0] == '/') { /* /dev/null */ - fprintf(o->file, "%snew file mode %06o%s\n", set, two->mode, reset); + strbuf_addf(&header, "%snew file mode %06o%s\n", set, two->mode, reset); if (xfrm_msg && xfrm_msg[0]) - fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); + strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset); } else if (lbl[1][0] == '/') { - fprintf(o->file, "%sdeleted file mode %06o%s\n", set, one->mode, reset); + strbuf_addf(&header, "%sdeleted file mode %06o%s\n", set, one->mode, reset); if (xfrm_msg && xfrm_msg[0]) - fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); + strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset); } else { if (one->mode != two->mode) { - fprintf(o->file, "%sold mode %06o%s\n", set, one->mode, reset); - fprintf(o->file, "%snew mode %06o%s\n", set, two->mode, reset); + strbuf_addf(&header, "%sold mode %06o%s\n", set, one->mode, reset); + strbuf_addf(&header, "%snew mode %06o%s\n", set, two->mode, reset); } if (xfrm_msg && xfrm_msg[0]) - fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); + strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset); + /* * we do not run diff between different kind * of objects. @@ -1503,6 +1671,8 @@ static void builtin_diff(const char *name_a, if (complete_rewrite && (textconv_one || !diff_filespec_is_binary(one)) && (textconv_two || !diff_filespec_is_binary(two))) { + fprintf(o->file, "%s", header.buf); + strbuf_reset(&header); emit_rewrite_diff(name_a, name_b, one, two, textconv_one, textconv_two, o); o->found_changes = 1; @@ -1520,6 +1690,8 @@ static void builtin_diff(const char *name_a, if (mf1.size == mf2.size && !memcmp(mf1.ptr, mf2.ptr, mf1.size)) goto free_ab_and_return; + fprintf(o->file, "%s", header.buf); + strbuf_reset(&header); if (DIFF_OPT_TST(o, BINARY)) emit_binary_diff(o->file, &mf1, &mf2); else @@ -1536,6 +1708,11 @@ static void builtin_diff(const char *name_a, struct emit_callback ecbdata; const struct userdiff_funcname *pe; + if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS)) { + fprintf(o->file, "%s", header.buf); + strbuf_reset(&header); + } + if (textconv_one) { size_t size; mf1.ptr = run_textconv(textconv_one, one, &size); @@ -1562,7 +1739,10 @@ static void builtin_diff(const char *name_a, ecbdata.color_diff = DIFF_OPT_TST(o, COLOR_DIFF); ecbdata.found_changesp = &o->found_changes; 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.header = header.len ? &header : NULL; xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; xecfg.ctxlen = o->context; xecfg.interhunkctxlen = o->interhunkcontext; @@ -1603,9 +1783,11 @@ static void builtin_diff(const char *name_a, free(mf1.ptr); if (textconv_two) free(mf2.ptr); + xdiff_clear_find_func(&xecfg); } free_ab_and_return: + strbuf_release(&header); diff_free_filespec_data(one); diff_free_filespec_data(two); free(a_one); @@ -1703,11 +1885,22 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data, &xpp, &xecfg, &ecb); - if ((data.ws_rule & WS_TRAILING_SPACE) && - data.trailing_blanks_start) { - fprintf(o->file, "%s:%d: ends with blank lines.\n", - data.filename, data.trailing_blanks_start); - data.status = 1; /* report errors */ + if (data.ws_rule & WS_BLANK_AT_EOF) { + struct emit_callback ecbdata; + int blank_at_eof; + + ecbdata.ws_rule = data.ws_rule; + check_blank_at_eof(&mf1, &mf2, &ecbdata); + blank_at_eof = ecbdata.blank_at_eof_in_preimage; + + if (blank_at_eof) { + static char *err; + if (!err) + err = whitespace_error_string(WS_BLANK_AT_EOF); + fprintf(o->file, "%s:%d: %s.\n", + data.filename, blank_at_eof, err); + data.status = 1; /* report errors */ + } } } free_and_return: @@ -1804,7 +1997,7 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int * If ce is marked as "assume unchanged", there is no * guarantee that work tree matches what we are looking for. */ - if (ce->ce_flags & CE_VALID) + if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) return 0; /* @@ -1836,9 +2029,14 @@ static int populate_from_stdin(struct diff_filespec *s) static int diff_populate_gitlink(struct diff_filespec *s, int size_only) { int len; - char *data = xmalloc(100); + char *data = xmalloc(100), *dirty = ""; + + /* Are we looking at the work tree? */ + if (!s->sha1_valid && s->dirty_submodule) + dirty = "-dirty"; + len = snprintf(data, 100, - "Subproject commit %s\n", sha1_to_hex(s->sha1)); + "Subproject commit %s%s\n", sha1_to_hex(s->sha1), dirty); s->data = data; s->size = len; s->should_free = 1; @@ -1964,23 +2162,33 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp, { int fd; struct strbuf buf = STRBUF_INIT; + struct strbuf template = STRBUF_INIT; + char *path_dup = xstrdup(path); + const char *base = basename(path_dup); + + /* Generate "XXXXXX_basename.ext" */ + strbuf_addstr(&template, "XXXXXX_"); + strbuf_addstr(&template, base); - fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX"); + fd = git_mkstemps(temp->tmp_path, PATH_MAX, template.buf, + strlen(base) + 1); if (fd < 0) - die("unable to create temp-file: %s", strerror(errno)); + die_errno("unable to create temp-file"); if (convert_to_working_tree(path, (const char *)blob, (size_t)size, &buf)) { blob = buf.buf; size = buf.len; } if (write_in_full(fd, blob, size) != size) - die("unable to write temp-file"); + die_errno("unable to write temp-file"); close(fd); temp->name = temp->tmp_path; strcpy(temp->hex, sha1_to_hex(sha1)); temp->hex[40] = 0; sprintf(temp->mode, "%06o", mode); strbuf_release(&buf); + strbuf_release(&template); + free(path_dup); } static struct diff_tempfile *prepare_temp_file(const char *name, @@ -2011,21 +2219,18 @@ static struct diff_tempfile *prepare_temp_file(const char *name, if (lstat(name, &st) < 0) { if (errno == ENOENT) goto not_a_valid_file; - die("stat(%s): %s", name, strerror(errno)); + die_errno("stat(%s)", name); } if (S_ISLNK(st.st_mode)) { - int ret; - char buf[PATH_MAX + 1]; /* ought to be SYMLINK_MAX */ - ret = readlink(name, buf, sizeof(buf)); - if (ret < 0) - die("readlink(%s)", name); - if (ret == sizeof(buf)) - die("symlink too long: %s", name); - prep_temp_blob(name, temp, buf, ret, + struct strbuf sb = STRBUF_INIT; + if (strbuf_readlink(&sb, name, st.st_size) < 0) + die_errno("readlink(%s)", name); + prep_temp_blob(name, temp, sb.buf, sb.len, (one->sha1_valid ? one->sha1 : null_sha1), (one->sha1_valid ? one->mode : S_IFLNK)); + strbuf_release(&sb); } else { /* we can borrow from the file in the work tree */ @@ -2094,7 +2299,7 @@ static void run_external_diff(const char *pgm, } *arg = NULL; fflush(NULL); - retval = run_command_v_opt(spawn_arg, 0); + retval = run_command_v_opt(spawn_arg, RUN_USING_SHELL); remove_tempfile(); if (retval) { fprintf(stderr, "external diff died, stopping at %s.\n", name); @@ -2212,7 +2417,7 @@ static void diff_fill_sha1_info(struct diff_filespec *one) return; } if (lstat(one->path, &st) < 0) - die("stat %s", one->path); + die_errno("stat '%s'", one->path); if (index_path(one->sha1, one->path, &st, 0)) die("cannot hash %s", one->path); } @@ -2370,6 +2575,20 @@ int diff_setup_done(struct diff_options *options) if (count > 1) die("--name-only, --name-status, --check and -s are mutually exclusive"); + /* + * Most of the time we can say "there are changes" + * only by checking if there are changed paths, but + * --ignore-whitespace* options force us to look + * inside contents. + */ + + if (DIFF_XDL_TST(options, IGNORE_WHITESPACE) || + DIFF_XDL_TST(options, IGNORE_WHITESPACE_CHANGE) || + DIFF_XDL_TST(options, IGNORE_WHITESPACE_AT_EOL)) + DIFF_OPT_SET(options, DIFF_FROM_CONTENTS); + else + DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS); + if (DIFF_OPT_TST(options, FIND_COPIES_HARDER)) options->detect_rename = DIFF_DETECT_COPY; @@ -2430,7 +2649,7 @@ int diff_setup_done(struct diff_options *options) * to have found. It does not make sense not to return with * exit code in such a case either. */ - if (DIFF_OPT_TST(options, QUIET)) { + if (DIFF_OPT_TST(options, QUICK)) { options->output_format = DIFF_FORMAT_NO_OUTPUT; DIFF_OPT_SET(options, EXIT_WITH_STATUS); } @@ -2582,13 +2801,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) /* xdiff options */ else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space")) - options->xdl_opts |= XDF_IGNORE_WHITESPACE; + DIFF_XDL_SET(options, IGNORE_WHITESPACE); else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change")) - options->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE; + DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE); else if (!strcmp(arg, "--ignore-space-at-eol")) - options->xdl_opts |= XDF_IGNORE_WHITESPACE_AT_EOL; + DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL); else if (!strcmp(arg, "--patience")) - options->xdl_opts |= XDF_PATIENCE_DIFF; + DIFF_XDL_SET(options, PATIENCE_DIFF); /* flags options */ else if (!strcmp(arg, "--binary")) { @@ -2607,18 +2826,30 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_OPT_SET(options, FOLLOW_RENAMES); else if (!strcmp(arg, "--color")) DIFF_OPT_SET(options, COLOR_DIFF); + else if (!prefixcmp(arg, "--color=")) { + int value = git_config_colorbool(NULL, arg+8, -1); + if (value == 0) + DIFF_OPT_CLR(options, COLOR_DIFF); + else if (value > 0) + DIFF_OPT_SET(options, COLOR_DIFF); + else + return error("option `color' expects \"always\", \"auto\", or \"never\""); + } else if (!strcmp(arg, "--no-color")) DIFF_OPT_CLR(options, COLOR_DIFF); - else if (!strcmp(arg, "--color-words")) - options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS; + else if (!strcmp(arg, "--color-words")) { + DIFF_OPT_SET(options, COLOR_DIFF); + DIFF_OPT_SET(options, COLOR_DIFF_WORDS); + } else if (!prefixcmp(arg, "--color-words=")) { - options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS; + DIFF_OPT_SET(options, COLOR_DIFF); + DIFF_OPT_SET(options, COLOR_DIFF_WORDS); options->word_regex = arg + 14; } else if (!strcmp(arg, "--exit-code")) DIFF_OPT_SET(options, EXIT_WITH_STATUS); else if (!strcmp(arg, "--quiet")) - DIFF_OPT_SET(options, QUIET); + DIFF_OPT_SET(options, QUICK); else if (!strcmp(arg, "--ext-diff")) DIFF_OPT_SET(options, ALLOW_EXTERNAL); else if (!strcmp(arg, "--no-ext-diff")) @@ -2629,6 +2860,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_OPT_CLR(options, ALLOW_TEXTCONV); else if (!strcmp(arg, "--ignore-submodules")) DIFF_OPT_SET(options, IGNORE_SUBMODULES); + else if (!strcmp(arg, "--submodule")) + DIFF_OPT_SET(options, SUBMODULE_LOG); + else if (!prefixcmp(arg, "--submodule=")) { + if (!strcmp(arg + 12, "log")) + DIFF_OPT_SET(options, SUBMODULE_LOG); + } /* misc options */ else if (!strcmp(arg, "-z")) @@ -2665,6 +2902,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) ; else if (!prefixcmp(arg, "--output=")) { options->file = fopen(arg + strlen("--output="), "w"); + if (!options->file) + die_errno("Could not open '%s'", arg + strlen("--output=")); options->close_file = 1; } else return 0; @@ -2680,7 +2919,7 @@ static int parse_num(const char **cp_p) num = 0; scale = 1; dot = 0; - for(;;) { + for (;;) { ch = *cp; if ( !dot && ch == '.' ) { scale = 1; @@ -3292,6 +3531,29 @@ void diff_flush(struct diff_options *options) separator++; } + if (output_format & DIFF_FORMAT_NO_OUTPUT && + DIFF_OPT_TST(options, EXIT_WITH_STATUS) && + DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) { + /* + * run diff_flush_patch for the exit status. setting + * options->file to /dev/null should be safe, becaue we + * aren't supposed to produce any output anyway. + */ + if (options->close_file) + fclose(options->file); + options->file = fopen("/dev/null", "w"); + if (!options->file) + die_errno("Could not open /dev/null"); + options->close_file = 1; + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + if (check_pair_status(p)) + diff_flush_patch(p, options); + if (options->found_changes) + break; + } + } + if (output_format & DIFF_FORMAT_PATCH) { if (separator) { putc(options->line_termination, options->file); @@ -3319,6 +3581,18 @@ free_queue: q->nr = q->alloc = 0; if (options->close_file) fclose(options->file); + + /* + * Report the content-level differences with HAS_CHANGES; + * diff_addremove/diff_change does not set the bit when + * DIFF_FROM_CONTENTS is in effect (e.g. with -w). + */ + if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) { + if (options->found_changes) + DIFF_OPT_SET(options, HAS_CHANGES); + else + DIFF_OPT_CLR(options, HAS_CHANGES); + } } static void diffcore_apply_filter(const char *filter) @@ -3402,7 +3676,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) struct diff_filepair *p = q->queue[i]; /* - * 1. Entries that come from stat info dirtyness + * 1. Entries that come from stat info dirtiness * always have both sides (iow, not create/delete), * one side of the object name is unknown, with * the same mode and size. Keep the ones that @@ -3438,6 +3712,23 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) *q = outq; } +static int diffnamecmp(const void *a_, const void *b_) +{ + const struct diff_filepair *a = *((const struct diff_filepair **)a_); + const struct diff_filepair *b = *((const struct diff_filepair **)b_); + const char *name_a, *name_b; + + name_a = a->one ? a->one->path : a->two->path; + name_b = b->one ? b->one->path : b->two->path; + return strcmp(name_a, name_b); +} + +void diffcore_fix_diff_index(struct diff_options *options) +{ + struct diff_queue_struct *q = &diff_queued_diff; + qsort(q->queue, q->nr, sizeof(q->queue[0]), diffnamecmp); +} + void diffcore_std(struct diff_options *options) { if (options->skip_stat_unmatch) @@ -3455,7 +3746,7 @@ void diffcore_std(struct diff_options *options) diff_resolve_rename_copy(); diffcore_apply_filter(options->filter); - if (diff_queued_diff.nr) + if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) DIFF_OPT_SET(options, HAS_CHANGES); else DIFF_OPT_CLR(options, HAS_CHANGES); @@ -3479,7 +3770,7 @@ int diff_result_code(struct diff_options *opt, int status) void diff_addremove(struct diff_options *options, int addremove, unsigned mode, const unsigned char *sha1, - const char *concatpath) + const char *concatpath, unsigned dirty_submodule) { struct diff_filespec *one, *two; @@ -3511,18 +3802,22 @@ void diff_addremove(struct diff_options *options, if (addremove != '+') fill_filespec(one, sha1, mode); - if (addremove != '-') + if (addremove != '-') { fill_filespec(two, sha1, mode); + two->dirty_submodule = dirty_submodule; + } diff_queue(&diff_queued_diff, one, two); - DIFF_OPT_SET(options, HAS_CHANGES); + if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) + DIFF_OPT_SET(options, HAS_CHANGES); } void diff_change(struct diff_options *options, unsigned old_mode, unsigned new_mode, const unsigned char *old_sha1, const unsigned char *new_sha1, - const char *concatpath) + const char *concatpath, + unsigned old_dirty_submodule, unsigned new_dirty_submodule) { struct diff_filespec *one, *two; @@ -3535,6 +3830,8 @@ void diff_change(struct diff_options *options, const unsigned char *tmp_c; tmp = old_mode; old_mode = new_mode; new_mode = tmp; tmp_c = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_c; + tmp = old_dirty_submodule; old_dirty_submodule = new_dirty_submodule; + new_dirty_submodule = tmp; } if (options->prefix && @@ -3545,9 +3842,12 @@ void diff_change(struct diff_options *options, two = alloc_filespec(concatpath); fill_filespec(one, old_sha1, old_mode); fill_filespec(two, new_sha1, new_mode); + one->dirty_submodule = old_dirty_submodule; + two->dirty_submodule = new_dirty_submodule; diff_queue(&diff_queued_diff, one, two); - DIFF_OPT_SET(options, HAS_CHANGES); + if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) + DIFF_OPT_SET(options, HAS_CHANGES); } void diff_unmerge(struct diff_options *options, @@ -3581,12 +3881,14 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec, *arg = NULL; memset(&child, 0, sizeof(child)); + child.use_shell = 1; child.argv = argv; child.out = -1; if (start_command(&child) != 0 || strbuf_read(&buf, child.out, 0) < 0 || finish_command(&child) != 0) { close(child.out); + strbuf_release(&buf); remove_tempfile(); error("error running textconv command '%s'", pgm); return NULL; |