diff options
| -rw-r--r-- | diff.c | 115 | ||||
| -rw-r--r-- | diff.h | 1 |
2 files changed, 115 insertions, 1 deletions
@@ -397,6 +397,46 @@ static void show_stats(struct diffstat_t* data) total_files, adds, dels); } +struct checkdiff_t { + struct xdiff_emit_state xm; + const char *filename; + int lineno; +}; + +static void checkdiff_consume(void *priv, char *line, unsigned long len) +{ + struct checkdiff_t *data = priv; + + if (line[0] == '+') { + int i, spaces = 0; + + data->lineno++; + + /* check space before tab */ + for (i = 1; i < len && (line[i] == ' ' || line[i] == '\t'); i++) + if (line[i] == ' ') + spaces++; + if (line[i - 1] == '\t' && spaces) + printf("%s:%d: space before tab:%.*s\n", + data->filename, data->lineno, (int)len, line); + + /* check white space at line end */ + if (line[len - 1] == '\n') + len--; + if (isspace(line[len - 1])) + printf("%s:%d: white space at end: %.*s\n", + data->filename, data->lineno, (int)len, line); + } else if (line[0] == ' ') + data->lineno++; + else if (line[0] == '@') { + char *plus = strchr(line, '+'); + if (plus) + data->lineno = strtol(plus, line + len, 10); + else + die("invalid diff"); + } +} + static unsigned char *deflate_it(char *data, unsigned long size, unsigned long *result_size) @@ -624,6 +664,41 @@ static void builtin_diffstat(const char *name_a, const char *name_b, } } +static void builtin_checkdiff(const char *name_a, const char *name_b, + struct diff_filespec *one, + struct diff_filespec *two) +{ + mmfile_t mf1, mf2; + struct checkdiff_t data; + + if (!two) + return; + + memset(&data, 0, sizeof(data)); + data.xm.consume = checkdiff_consume; + data.filename = name_b ? name_b : name_a; + data.lineno = 0; + + if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) + die("unable to read files to diff"); + + if (mmfile_is_binary(&mf2)) + return; + else { + /* Crazy xdl interfaces.. */ + xpparam_t xpp; + xdemitconf_t xecfg; + xdemitcb_t ecb; + + xpp.flags = XDF_NEED_MINIMAL; + xecfg.ctxlen = 0; + xecfg.flags = 0; + ecb.outf = xdiff_outf; + ecb.priv = &data; + xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); + } +} + struct diff_filespec *alloc_filespec(const char *path) { int namelen = strlen(path); @@ -1180,6 +1255,25 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o, builtin_diffstat(name, other, p->one, p->two, diffstat, complete_rewrite); } +static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) +{ + const char *name; + const char *other; + + if (DIFF_PAIR_UNMERGED(p)) { + /* unmerged */ + return; + } + + name = p->one->path; + other = (strcmp(name, p->two->path) ? p->two->path : NULL); + + diff_fill_sha1_info(p->one); + diff_fill_sha1_info(p->two); + + builtin_checkdiff(name, other, p->one, p->two); +} + void diff_setup(struct diff_options *options) { memset(options, 0, sizeof(*options)); @@ -1205,7 +1299,8 @@ int diff_setup_done(struct diff_options *options) * recursive bits for other formats here. */ if ((options->output_format == DIFF_FORMAT_PATCH) || - (options->output_format == DIFF_FORMAT_DIFFSTAT)) + (options->output_format == DIFF_FORMAT_DIFFSTAT) || + (options->output_format == DIFF_FORMAT_CHECKDIFF)) options->recursive = 1; if (options->detect_rename && options->rename_limit < 0) @@ -1288,6 +1383,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) } else if (!strcmp(arg, "--stat")) options->output_format = DIFF_FORMAT_DIFFSTAT; + else if (!strcmp(arg, "--check")) + options->output_format = DIFF_FORMAT_CHECKDIFF; else if (!strcmp(arg, "--summary")) options->summary = 1; else if (!strcmp(arg, "--patch-with-stat")) { @@ -1610,6 +1707,19 @@ static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o, run_diffstat(p, o, diffstat); } +static void diff_flush_checkdiff(struct diff_filepair *p, + struct diff_options *o) +{ + if (diff_unmodified_pair(p)) + return; + + if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || + (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) + return; /* no tree diffs in patch format */ + + run_checkdiff(p, o); +} + int diff_queue_is_empty(void) { struct diff_queue_struct *q = &diff_queued_diff; @@ -1740,6 +1850,9 @@ static void flush_one_pair(struct diff_filepair *p, case DIFF_FORMAT_DIFFSTAT: diff_flush_stat(p, options, diffstat); break; + case DIFF_FORMAT_CHECKDIFF: + diff_flush_checkdiff(p, options); + break; case DIFF_FORMAT_PATCH: diff_flush_patch(p, options); break; @@ -153,6 +153,7 @@ extern int diff_queue_is_empty(void); #define DIFF_FORMAT_NAME 4 #define DIFF_FORMAT_NAME_STATUS 5 #define DIFF_FORMAT_DIFFSTAT 6 +#define DIFF_FORMAT_CHECKDIFF 7 extern void diff_flush(struct diff_options*); |