static const char *external_diff_cmd_cfg;
int diff_auto_refresh_index = 1;
static int diff_mnemonic_prefix;
+static int diff_no_prefix;
static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
diff_mnemonic_prefix = git_config_bool(var, value);
return 0;
}
+ if (!strcmp(var, "diff.noprefix")) {
+ diff_no_prefix = git_config_bool(var, value);
+ return 0;
+ }
if (!strcmp(var, "diff.external"))
return git_config_string(&external_diff_cmd_cfg, var, value);
if (!strcmp(var, "diff.wordregex"))
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> @@",
ep += 2; /* skip over @@ */
/* The hunk header in fraginfo color */
- emit_line(ecbdata->opt, 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->opt, 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->opt, 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) {
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;
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;
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;
} 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. */
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));
diff_words_fill(&diff_words->minus, &minus, diff_words->word_regex);
diff_words_fill(&diff_words->plus, &plus, diff_words->word_regex);
- xpp.flags = XDF_NEED_MINIMAL;
+ xpp.flags = 0;
/* as only the hunk header will be parsed, we need a 0-context */
xecfg.ctxlen = 0;
xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, 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;
}
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
+ int must_show_header,
struct diff_options *o,
int complete_rewrite)
{
if (lbl[0][0] == '/') {
/* /dev/null */
strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
- if (xfrm_msg && xfrm_msg[0])
- strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else if (lbl[1][0] == '/') {
strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
- if (xfrm_msg && xfrm_msg[0])
- strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else {
if (one->mode != two->mode) {
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);
+ must_show_header = 1;
}
- if (xfrm_msg && xfrm_msg[0])
- strbuf_addf(&header, "%s%s%s\n", set, xfrm_msg, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
/*
* we do not run diff between different kind
die("unable to read files to diff");
/* Quite common confusing case */
if (mf1.size == mf2.size &&
- !memcmp(mf1.ptr, mf2.ptr, mf1.size))
+ !memcmp(mf1.ptr, mf2.ptr, mf1.size)) {
+ if (must_show_header)
+ fprintf(o->file, "%s", header.buf);
goto free_ab_and_return;
+ }
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
if (DIFF_OPT_TST(o, BINARY))
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
- if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS)) {
+ if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS) || must_show_header) {
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
}
check_blank_at_eof(&mf1, &mf2, &ecbdata);
ecbdata.opt = o;
ecbdata.header = header.len ? &header : NULL;
- xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
+ xpp.flags = o->xdl_opts;
xecfg.ctxlen = o->context;
xecfg.interhunkctxlen = o->interhunkcontext;
xecfg.flags = XDL_EMIT_FUNCNAMES;
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)
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
- xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
+ xpp.flags = o->xdl_opts;
xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
&xpp, &xecfg);
}
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 1; /* at least one context line */
- xpp.flags = XDF_NEED_MINIMAL;
+ xpp.flags = 0;
xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data,
&xpp, &xecfg);
struct diff_filespec *one,
struct diff_filespec *two,
struct diff_options *o,
- struct diff_filepair *p)
+ struct diff_filepair *p,
+ int *must_show_header,
+ int use_color)
{
+ 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 = "";
+ *must_show_header = 1;
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%%", line_prefix, similarity_index(p));
- strbuf_addf(msg, "\n%scopy from ", line_prefix);
+ 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, "\n%scopy to ", line_prefix);
+ strbuf_addf(msg, "%s\n%s%scopy to ", reset, line_prefix, set);
quote_c_style(other, msg, NULL, 0);
- strbuf_addch(msg, '\n');
+ strbuf_addf(msg, "%s\n", reset);
break;
case DIFF_STATUS_RENAMED:
- strbuf_addf(msg, "%ssimilarity index %d%%", line_prefix, similarity_index(p));
- strbuf_addf(msg, "\n%srename from ", line_prefix);
+ 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, "\n%srename to ", line_prefix);
+ strbuf_addf(msg, "%s\n%s%srename to ",
+ reset, line_prefix, set);
quote_c_style(other, msg, NULL, 0);
- strbuf_addch(msg, '\n');
+ strbuf_addf(msg, "%s\n", reset);
break;
case DIFF_STATUS_MODIFIED:
if (p->score) {
- strbuf_addf(msg, "%sdissimilarity index %d%%\n",
- line_prefix, similarity_index(p));
+ strbuf_addf(msg, "%s%sdissimilarity index %d%%%s\n",
+ line_prefix,
+ set, similarity_index(p), reset);
break;
}
/* fallthru */
default:
/* nothing */
- ;
+ *must_show_header = 0;
}
if (one && two && hashcmp(one->sha1, two->sha1)) {
int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
(!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
abbrev = 40;
}
- strbuf_addf(msg, "%sindex %.*s..%.*s",
- line_prefix, abbrev, sha1_to_hex(one->sha1),
- abbrev, sha1_to_hex(two->sha1));
+ 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)
strbuf_addf(msg, " %06o", one->mode);
- strbuf_addch(msg, '\n');
+ strbuf_addf(msg, "%s\n", reset);
}
- if (msg->len)
- strbuf_setlen(msg, msg->len - 1);
}
static void run_diff_cmd(const char *pgm,
{
const char *xfrm_msg = NULL;
int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score;
-
- if (msg) {
- fill_metainfo(msg, name, other, one, two, o, p);
- xfrm_msg = msg->len ? msg->buf : NULL;
- }
+ int must_show_header = 0;
if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
pgm = NULL;
pgm = drv->external;
}
+ if (msg) {
+ /*
+ * don't use colors when the header is intended for an
+ * external diff driver
+ */
+ fill_metainfo(msg, name, other, one, two, o, p,
+ &must_show_header,
+ DIFF_OPT_TST(o, COLOR_DIFF) && !pgm);
+ xfrm_msg = msg->len ? msg->buf : NULL;
+ }
+
if (pgm) {
run_external_diff(pgm, name, other, one, two, xfrm_msg,
complete_rewrite);
}
if (one && two)
builtin_diff(name, other ? other : name,
- one, two, xfrm_msg, o, complete_rewrite);
+ one, two, xfrm_msg, must_show_header,
+ o, complete_rewrite);
else
fprintf(o->file, "* Unmerged path %s\n", name);
}
DIFF_OPT_SET(options, COLOR_DIFF);
options->detect_rename = diff_detect_rename_default;
- if (!diff_mnemonic_prefix) {
+ if (diff_no_prefix) {
+ options->a_prefix = options->b_prefix = "";
+ } else if (!diff_mnemonic_prefix) {
options->a_prefix = "a/";
options->b_prefix = "b/";
}
len2, p->two->path);
git_SHA1_Update(&ctx, buffer, len1);
- xpp.flags = XDF_NEED_MINIMAL;
+ xpp.flags = 0;
xecfg.ctxlen = 3;
xecfg.flags = XDL_EMIT_FUNCNAMES;
xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data,
projects / ~andy / git / blobdiff