char *cmd;
} *user_diff, **user_diff_tail;
+static void read_config_if_needed(void)
+{
+ if (!user_diff_tail) {
+ user_diff_tail = &user_diff;
+ git_config(git_diff_ui_config);
+ }
+}
+
/*
* Currently there is only "diff.<drivername>.command" variable;
* because there are "diff.color.<slot>" variables, we are parsing
return 0;
}
+/*
+ * 'diff.<what>.funcname' attribute can be specified in the configuration
+ * to define a customized regexp to find the beginning of a function to
+ * be used for hunk header lines of "diff -p" style output.
+ */
+static struct funcname_pattern {
+ char *name;
+ char *pattern;
+ struct funcname_pattern *next;
+} *funcname_pattern_list;
+
+static int parse_funcname_pattern(const char *var, const char *ep, const char *value)
+{
+ const char *name;
+ int namelen;
+ struct funcname_pattern *pp;
+
+ name = var + 5; /* "diff." */
+ namelen = ep - name;
+
+ for (pp = funcname_pattern_list; pp; pp = pp->next)
+ if (!strncmp(pp->name, name, namelen) && !pp->name[namelen])
+ break;
+ if (!pp) {
+ char *namebuf;
+ pp = xcalloc(1, sizeof(*pp));
+ namebuf = xmalloc(namelen + 1);
+ memcpy(namebuf, name, namelen);
+ namebuf[namelen] = 0;
+ pp->name = namebuf;
+ pp->next = funcname_pattern_list;
+ funcname_pattern_list = pp;
+ }
+ if (pp->pattern)
+ free(pp->pattern);
+ pp->pattern = xstrdup(value);
+ return 0;
+}
+
/*
* These are to give UI layer defaults.
* The core-level commands such as git-diff-files should
if (!prefixcmp(var, "diff.")) {
const char *ep = strrchr(var, '.');
- if (ep != var + 4 && !strcmp(ep, ".command"))
- return parse_lldiff_command(var, ep, value);
+ if (ep != var + 4) {
+ if (!strcmp(ep, ".command"))
+ return parse_lldiff_command(var, ep, value);
+ if (!strcmp(ep, ".funcname"))
+ return parse_funcname_pattern(var, ep, value);
+ }
}
if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
int slot = parse_diff_color_slot(var, 11);
mmfile_t minus, plus;
int i;
+ memset(&xecfg, 0, sizeof(xecfg));
minus.size = diff_words->minus.text.size;
minus.ptr = xmalloc(minus.size);
memcpy(minus.ptr, diff_words->minus.text.ptr, minus.size);
xpp.flags = XDF_NEED_MINIMAL;
xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc;
- xecfg.flags = 0;
ecb.outf = xdiff_outf;
ecb.priv = diff_words;
diff_words->xm.consume = fn_out_diff_words_aux;
{
static struct git_attr *attr_diff;
- if (!attr_diff)
+ if (!attr_diff) {
attr_diff = git_attr("diff", 4);
- check->attr = attr_diff;
+ }
+ check[0].attr = attr_diff;
}
-static int file_is_binary(struct diff_filespec *one)
+static void diff_filespec_check_attr(struct diff_filespec *one)
{
struct git_attr_check attr_diff_check;
+ int check_from_data = 0;
+
+ if (one->checked_attr)
+ return;
setup_diff_attr_check(&attr_diff_check);
+ one->is_binary = 0;
+ one->funcname_pattern_ident = NULL;
+
if (!git_checkattr(one->path, 1, &attr_diff_check)) {
- const char *value = attr_diff_check.value;
+ const char *value;
+
+ /* binaryness */
+ value = attr_diff_check.value;
if (ATTR_TRUE(value))
- return 0;
+ ;
else if (ATTR_FALSE(value))
- return 1;
+ one->is_binary = 1;
+ else
+ check_from_data = 1;
+
+ /* funcname pattern ident */
+ if (ATTR_TRUE(value) || ATTR_FALSE(value) || ATTR_UNSET(value))
+ ;
+ else
+ one->funcname_pattern_ident = value;
}
- if (!one->data) {
- if (!DIFF_FILE_VALID(one))
- return 0;
- diff_populate_filespec(one, 0);
+ if (check_from_data) {
+ if (!one->data && DIFF_FILE_VALID(one))
+ diff_populate_filespec(one, 0);
+
+ if (one->data)
+ one->is_binary = buffer_is_binary(one->data, one->size);
}
- return buffer_is_binary(one->data, one->size);
+}
+
+int diff_filespec_is_binary(struct diff_filespec *one)
+{
+ diff_filespec_check_attr(one);
+ return one->is_binary;
+}
+
+static const char *funcname_pattern(const char *ident)
+{
+ struct funcname_pattern *pp;
+
+ read_config_if_needed();
+ for (pp = funcname_pattern_list; pp; pp = pp->next)
+ if (!strcmp(ident, pp->name))
+ return pp->pattern;
+ return NULL;
+}
+
+static const char *diff_funcname_pattern(struct diff_filespec *one)
+{
+ const char *ident, *pattern;
+
+ diff_filespec_check_attr(one);
+ ident = one->funcname_pattern_ident;
+
+ if (!ident)
+ /*
+ * If the config file has "funcname.default" defined, that
+ * regexp is used; otherwise NULL is returned and xemit uses
+ * the built-in default.
+ */
+ return funcname_pattern("default");
+
+ /* Look up custom "funcname.$ident" regexp from config. */
+ pattern = funcname_pattern(ident);
+ if (pattern)
+ return pattern;
+
+ /*
+ * And define built-in fallback patterns here. Note that
+ * these can be overriden by the user's config settings.
+ */
+ if (!strcmp(ident, "java"))
+ return "!^[ ]*\\(catch\\|do\\|for\\|if\\|instanceof\\|"
+ "new\\|return\\|switch\\|throw\\|while\\)\n"
+ "^[ ]*\\(\\([ ]*"
+ "[A-Za-z_][A-Za-z_0-9]*\\)\\{2,\\}"
+ "[ ]*([^;]*$\\)";
+
+ return NULL;
}
static void builtin_diff(const char *name_a,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (!o->text && (file_is_binary(one) || file_is_binary(two))) {
+ if (!o->text &&
+ (diff_filespec_is_binary(one) || diff_filespec_is_binary(two))) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
xdemitconf_t xecfg;
xdemitcb_t ecb;
struct emit_callback ecbdata;
+ const char *funcname_pattern;
+ funcname_pattern = diff_funcname_pattern(one);
+ if (!funcname_pattern)
+ funcname_pattern = diff_funcname_pattern(two);
+
+ memset(&xecfg, 0, sizeof(xecfg));
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.label_path = lbl;
ecbdata.color_diff = o->color_diff;
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
xecfg.ctxlen = o->context;
xecfg.flags = XDL_EMIT_FUNCNAMES;
+ if (funcname_pattern)
+ xdiff_set_find_func(&xecfg, funcname_pattern);
if (!diffopts)
;
else if (!prefixcmp(diffopts, "--unified="))
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (file_is_binary(one) || file_is_binary(two)) {
+ if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
data->is_binary = 1;
data->added = mf2.size;
data->deleted = mf1.size;
xdemitconf_t xecfg;
xdemitcb_t ecb;
+ memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
- xecfg.ctxlen = 0;
- xecfg.flags = 0;
ecb.outf = xdiff_outf;
ecb.priv = diffstat;
xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (file_is_binary(two))
+ if (diff_filespec_is_binary(two))
goto free_and_return;
else {
/* Crazy xdl interfaces.. */
xdemitconf_t xecfg;
xdemitcb_t ecb;
+ memset(&xecfg, 0, sizeof(xecfg));
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);
!ATTR_UNSET(value)) {
struct ll_diff_driver *drv;
- if (!user_diff_tail) {
- user_diff_tail = &user_diff;
- git_config(git_diff_ui_config);
- }
+ read_config_if_needed();
for (drv = user_diff; drv; drv = drv->next)
if (!strcmp(drv->name, value))
return drv->cmd;
if (o->binary) {
mmfile_t mf;
- if ((!fill_mmfile(&mf, one) && file_is_binary(one)) ||
- (!fill_mmfile(&mf, two) && file_is_binary(two)))
+ if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
+ (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
abbrev = 40;
}
len += snprintf(msg + len, sizeof(msg) - len,
struct diff_filepair *p = q->queue[i];
int len1, len2;
+ memset(&xecfg, 0, sizeof(xecfg));
if (p->status == 0)
return error("internal diff status error");
if (p->status == DIFF_STATUS_UNKNOWN)
return error("unable to read files to diff");
/* Maybe hash p->two? into the patch id? */
- if (file_is_binary(p->two))
+ if (diff_filespec_is_binary(p->two))
continue;
len1 = remove_space(p->one->path, strlen(p->one->path));
if (options->quiet)
return;
- /*
- * break/rename count similarity differently depending on
- * the binary-ness.
- */
- if ((options->break_opt != -1) || (options->detect_rename)) {
- struct diff_queue_struct *q = &diff_queued_diff;
- int i;
-
- for (i = 0; i < q->nr; i++) {
- struct diff_filepair *p = q->queue[i];
- p->one->is_binary = file_is_binary(p->one);
- p->two->is_binary = file_is_binary(p->two);
- }
- }
-
if (options->break_opt != -1)
diffcore_break(options->break_opt);
if (options->detect_rename)
size = FIRST_FEW_BYTES;
return !!memchr(ptr, 0, size);
}
+
+struct ff_regs {
+ int nr;
+ struct ff_reg {
+ regex_t re;
+ int negate;
+ } *array;
+};
+
+static long ff_regexp(const char *line, long len,
+ char *buffer, long buffer_size, void *priv)
+{
+ char *line_buffer = xstrndup(line, len); /* make NUL terminated */
+ struct ff_regs *regs = priv;
+ regmatch_t pmatch[2];
+ int result = 0, i;
+
+ for (i = 0; i < regs->nr; i++) {
+ struct ff_reg *reg = regs->array + i;
+ if (reg->negate ^ !!regexec(®->re,
+ line_buffer, 2, pmatch, 0)) {
+ free(line_buffer);
+ return -1;
+ }
+ }
+ i = pmatch[1].rm_so >= 0 ? 1 : 0;
+ line += pmatch[i].rm_so;
+ result = pmatch[i].rm_eo - pmatch[i].rm_so;
+ if (result > buffer_size)
+ result = buffer_size;
+ else
+ while (result > 0 && (isspace(line[result - 1]) ||
+ line[result - 1] == '\n'))
+ result--;
+ memcpy(buffer, line, result);
+ free(line_buffer);
+ return result;
+}
+
+void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value)
+{
+ int i;
+ struct ff_regs *regs;
+
+ xecfg->find_func = ff_regexp;
+ regs = xecfg->find_func_priv = xmalloc(sizeof(struct ff_regs));
+ for (i = 0, regs->nr = 1; value[i]; i++)
+ if (value[i] == '\n')
+ regs->nr++;
+ regs->array = xmalloc(regs->nr * sizeof(struct ff_reg));
+ for (i = 0; i < regs->nr; i++) {
+ struct ff_reg *reg = regs->array + i;
+ const char *ep = strchr(value, '\n'), *expression;
+ char *buffer = NULL;
+
+ reg->negate = (*value == '!');
+ if (reg->negate && i == regs->nr - 1)
+ die("Last expression must not be negated: %s", value);
+ if (*value == '!')
+ value++;
+ if (ep)
+ expression = buffer = xstrndup(value, ep - value);
+ else
+ expression = value;
+ if (regcomp(®->re, expression, 0))
+ die("Invalid regexp to look for hunk header: %s", expression);
+ if (buffer)
+ free(buffer);
+ value = ep + 1;
+ }
+}
}
-static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll) {
+static long def_ff(const char *rec, long len, char *buf, long sz, void *priv)
+{
+ if (len > 0 &&
+ (isalpha((unsigned char)*rec) || /* identifier? */
+ *rec == '_' || /* also identifier? */
+ *rec == '$')) { /* identifiers from VMS and other esoterico */
+ if (len > sz)
+ len = sz;
+ while (0 < len && isspace((unsigned char)rec[len - 1]))
+ len--;
+ memcpy(buf, rec, len);
+ return len;
+ }
+ return -1;
+}
+
+static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll,
+ find_func_t ff, void *ff_priv) {
/*
* Be quite stupid about this for now. Find a line in the old file
const char *rec;
long len;
- *ll = 0;
while (i-- > 0) {
len = xdl_get_rec(xf, i, &rec);
- if (len > 0 &&
- (isalpha((unsigned char)*rec) || /* identifier? */
- *rec == '_' || /* also identifier? */
- *rec == '$')) { /* mysterious GNU diff's invention */
- if (len > sz)
- len = sz;
- while (0 < len && isspace((unsigned char)rec[len - 1]))
- len--;
- memcpy(buf, rec, len);
- *ll = len;
+ if ((*ll = ff(rec, len, buf, sz, ff_priv)) >= 0)
return;
- }
}
+ *ll = 0;
}
xdchange_t *xch, *xche;
char funcbuf[80];
long funclen = 0;
+ find_func_t ff = xecfg->find_func ? xecfg->find_func : def_ff;
if (xecfg->flags & XDL_EMIT_COMMON)
return xdl_emit_common(xe, xscr, ecb, xecfg);
if (xecfg->flags & XDL_EMIT_FUNCNAMES) {
xdl_find_func(&xe->xdf1, s1, funcbuf,
- sizeof(funcbuf), &funclen);
+ sizeof(funcbuf), &funclen,
+ ff, xecfg->find_func_priv);
}
if (xdl_emit_hunk_hdr(s1 + 1, e1 - s1, s2 + 1, e2 - s2,
funcbuf, funclen, ecb) < 0)