* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/>.
*
* Davide Libenzi <davidel@xmailserver.org>
*
* 0 = conflict,
* 1 = no conflict, take first,
* 2 = no conflict, take second.
+ * 3 = no conflict, take both.
*/
int mode;
/*
return 0;
}
-static int xdl_recs_copy_0(int use_orig, xdfenv_t *xe, int i, int count, int add_nl, char *dest)
+static int xdl_recs_copy_0(int use_orig, xdfenv_t *xe, int i, int count, int needs_cr, int add_nl, char *dest)
{
xrecord_t **recs;
int size = 0;
if (add_nl) {
i = recs[count - 1]->size;
if (i == 0 || recs[count - 1]->ptr[i - 1] != '\n') {
+ if (needs_cr) {
+ if (dest)
+ dest[size] = '\r';
+ size++;
+ }
+
if (dest)
dest[size] = '\n';
size++;
return size;
}
-static int xdl_recs_copy(xdfenv_t *xe, int i, int count, int add_nl, char *dest)
+static int xdl_recs_copy(xdfenv_t *xe, int i, int count, int needs_cr, int add_nl, char *dest)
+{
+ return xdl_recs_copy_0(0, xe, i, count, needs_cr, add_nl, dest);
+}
+
+static int xdl_orig_copy(xdfenv_t *xe, int i, int count, int needs_cr, int add_nl, char *dest)
{
- return xdl_recs_copy_0(0, xe, i, count, add_nl, dest);
+ return xdl_recs_copy_0(1, xe, i, count, needs_cr, add_nl, dest);
+}
+
+/*
+ * Returns 1 if the i'th line ends in CR/LF (if it is the last line and
+ * has no eol, the preceding line, if any), 0 if it ends in LF-only, and
+ * -1 if the line ending cannot be determined.
+ */
+static int is_eol_crlf(xdfile_t *file, int i)
+{
+ long size;
+
+ if (i < file->nrec - 1)
+ /* All lines before the last *must* end in LF */
+ return (size = file->recs[i]->size) > 1 &&
+ file->recs[i]->ptr[size - 2] == '\r';
+ if (!file->nrec)
+ /* Cannot determine eol style from empty file */
+ return -1;
+ if ((size = file->recs[i]->size) &&
+ file->recs[i]->ptr[size - 1] == '\n')
+ /* Last line; ends in LF; Is it CR/LF? */
+ return size > 1 &&
+ file->recs[i]->ptr[size - 2] == '\r';
+ if (!i)
+ /* The only line has no eol */
+ return -1;
+ /* Determine eol from second-to-last line */
+ return (size = file->recs[i - 1]->size) > 1 &&
+ file->recs[i - 1]->ptr[size - 2] == '\r';
}
-static int xdl_orig_copy(xdfenv_t *xe, int i, int count, int add_nl, char *dest)
+static int is_cr_needed(xdfenv_t *xe1, xdfenv_t *xe2, xdmerge_t *m)
{
- return xdl_recs_copy_0(1, xe, i, count, add_nl, dest);
+ int needs_cr;
+
+ /* Match post-images' preceding, or first, lines' end-of-line style */
+ needs_cr = is_eol_crlf(&xe1->xdf2, m->i1 ? m->i1 - 1 : 0);
+ if (needs_cr)
+ needs_cr = is_eol_crlf(&xe2->xdf2, m->i2 ? m->i2 - 1 : 0);
+ /* Look at pre-image's first line, unless we already settled on LF */
+ if (needs_cr)
+ needs_cr = is_eol_crlf(&xe1->xdf1, 0);
+ /* If still undecided, use LF-only */
+ return needs_cr < 0 ? 0 : needs_cr;
}
static int fill_conflict_hunk(xdfenv_t *xe1, const char *name1,
xdfenv_t *xe2, const char *name2,
+ const char *name3,
int size, int i, int style,
xdmerge_t *m, char *dest, int marker_size)
{
int marker1_size = (name1 ? strlen(name1) + 1 : 0);
int marker2_size = (name2 ? strlen(name2) + 1 : 0);
- int j;
+ int marker3_size = (name3 ? strlen(name3) + 1 : 0);
+ int needs_cr = is_cr_needed(xe1, xe2, m);
if (marker_size <= 0)
marker_size = DEFAULT_CONFLICT_MARKER_SIZE;
/* Before conflicting part */
- size += xdl_recs_copy(xe1, i, m->i1 - i, 0,
+ size += xdl_recs_copy(xe1, i, m->i1 - i, 0, 0,
dest ? dest + size : NULL);
if (!dest) {
- size += marker_size + 1 + marker1_size;
+ size += marker_size + 1 + needs_cr + marker1_size;
} else {
- for (j = 0; j < marker_size; j++)
- dest[size++] = '<';
+ memset(dest + size, '<', marker_size);
+ size += marker_size;
if (marker1_size) {
dest[size] = ' ';
memcpy(dest + size + 1, name1, marker1_size - 1);
size += marker1_size;
}
+ if (needs_cr)
+ dest[size++] = '\r';
dest[size++] = '\n';
}
/* Postimage from side #1 */
- size += xdl_recs_copy(xe1, m->i1, m->chg1, 1,
+ size += xdl_recs_copy(xe1, m->i1, m->chg1, needs_cr, 1,
dest ? dest + size : NULL);
if (style == XDL_MERGE_DIFF3) {
/* Shared preimage */
if (!dest) {
- size += marker_size + 1;
+ size += marker_size + 1 + needs_cr + marker3_size;
} else {
- for (j = 0; j < marker_size; j++)
- dest[size++] = '|';
+ memset(dest + size, '|', marker_size);
+ size += marker_size;
+ if (marker3_size) {
+ dest[size] = ' ';
+ memcpy(dest + size + 1, name3, marker3_size - 1);
+ size += marker3_size;
+ }
+ if (needs_cr)
+ dest[size++] = '\r';
dest[size++] = '\n';
}
- size += xdl_orig_copy(xe1, m->i0, m->chg0, 1,
+ size += xdl_orig_copy(xe1, m->i0, m->chg0, needs_cr, 1,
dest ? dest + size : NULL);
}
if (!dest) {
- size += marker_size + 1;
+ size += marker_size + 1 + needs_cr;
} else {
- for (j = 0; j < marker_size; j++)
- dest[size++] = '=';
+ memset(dest + size, '=', marker_size);
+ size += marker_size;
+ if (needs_cr)
+ dest[size++] = '\r';
dest[size++] = '\n';
}
/* Postimage from side #2 */
- size += xdl_recs_copy(xe2, m->i2, m->chg2, 1,
+ size += xdl_recs_copy(xe2, m->i2, m->chg2, needs_cr, 1,
dest ? dest + size : NULL);
if (!dest) {
- size += marker_size + 1 + marker2_size;
+ size += marker_size + 1 + needs_cr + marker2_size;
} else {
- for (j = 0; j < marker_size; j++)
- dest[size++] = '>';
+ memset(dest + size, '>', marker_size);
+ size += marker_size;
if (marker2_size) {
dest[size] = ' ';
memcpy(dest + size + 1, name2, marker2_size - 1);
size += marker2_size;
}
+ if (needs_cr)
+ dest[size++] = '\r';
dest[size++] = '\n';
}
return size;
static int xdl_fill_merge_buffer(xdfenv_t *xe1, const char *name1,
xdfenv_t *xe2, const char *name2,
+ const char *ancestor_name,
int favor,
xdmerge_t *m, char *dest, int style,
int marker_size)
if (m->mode == 0)
size = fill_conflict_hunk(xe1, name1, xe2, name2,
+ ancestor_name,
size, i, style, m, dest,
marker_size);
- else if (m->mode == 1)
- size += xdl_recs_copy(xe1, i, m->i1 + m->chg1 - i, 0,
- dest ? dest + size : NULL);
- else if (m->mode == 2)
- size += xdl_recs_copy(xe2, m->i2 - m->i1 + i,
- m->i1 + m->chg2 - i, 0,
+ else if (m->mode & 3) {
+ /* Before conflicting part */
+ size += xdl_recs_copy(xe1, i, m->i1 - i, 0, 0,
dest ? dest + size : NULL);
- else
+ /* Postimage from side #1 */
+ if (m->mode & 1) {
+ int needs_cr = is_cr_needed(xe1, xe2, m);
+
+ size += xdl_recs_copy(xe1, m->i1, m->chg1, needs_cr, (m->mode & 2),
+ dest ? dest + size : NULL);
+ }
+ /* Postimage from side #2 */
+ if (m->mode & 2)
+ size += xdl_recs_copy(xe2, m->i2, m->chg2, 0, 0,
+ dest ? dest + size : NULL);
+ } else
continue;
i = m->i1 + m->chg1;
}
- size += xdl_recs_copy(xe1, i, xe1->xdf2.nrec - i, 0,
+ size += xdl_recs_copy(xe1, i, xe1->xdf2.nrec - i, 0, 0,
dest ? dest + size : NULL);
return size;
}
static int line_contains_alnum(const char *ptr, long size)
{
while (size--)
- if (isalnum(*(ptr++)))
+ if (isalnum((unsigned char)*(ptr++)))
return 1;
return 0;
}
*
* returns < 0 on error, == 0 for no conflicts, else number of conflicts
*/
-static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1, const char *name1,
- xdfenv_t *xe2, xdchange_t *xscr2, const char *name2,
- int flags, xmparam_t const *xmp, mmbuffer_t *result) {
+static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1,
+ xdfenv_t *xe2, xdchange_t *xscr2,
+ xmparam_t const *xmp, mmbuffer_t *result)
+{
xdmerge_t *changes, *c;
xpparam_t const *xpp = &xmp->xpp;
+ const char *const ancestor_name = xmp->ancestor;
+ const char *const name1 = xmp->file1;
+ const char *const name2 = xmp->file2;
int i0, i1, i2, chg0, chg1, chg2;
- int level = flags & XDL_MERGE_LEVEL_MASK;
- int style = flags & XDL_MERGE_STYLE_MASK;
- int favor = XDL_MERGE_FAVOR(flags);
+ int level = xmp->level;
+ int style = xmp->style;
+ int favor = xmp->favor;
if (style == XDL_MERGE_DIFF3) {
/*
if (result) {
int marker_size = xmp->marker_size;
int size = xdl_fill_merge_buffer(xe1, name1, xe2, name2,
+ ancestor_name,
favor, changes, NULL, style,
marker_size);
result->ptr = xdl_malloc(size);
return -1;
}
result->size = size;
- xdl_fill_merge_buffer(xe1, name1, xe2, name2, favor, changes,
+ xdl_fill_merge_buffer(xe1, name1, xe2, name2,
+ ancestor_name, favor, changes,
result->ptr, style, marker_size);
}
return xdl_cleanup_merge(changes);
}
-int xdl_merge(mmfile_t *orig, mmfile_t *mf1, const char *name1,
- mmfile_t *mf2, const char *name2,
- xmparam_t const *xmp, int flags, mmbuffer_t *result) {
+int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,
+ xmparam_t const *xmp, mmbuffer_t *result)
+{
xdchange_t *xscr1, *xscr2;
xdfenv_t xe1, xe2;
int status;
result->ptr = NULL;
result->size = 0;
- if (xdl_do_diff(orig, mf1, xpp, &xe1) < 0 ||
- xdl_do_diff(orig, mf2, xpp, &xe2) < 0) {
+ if (xdl_do_diff(orig, mf1, xpp, &xe1) < 0) {
+ return -1;
+ }
+ if (xdl_do_diff(orig, mf2, xpp, &xe2) < 0) {
+ xdl_free_env(&xe1);
return -1;
}
if (xdl_change_compact(&xe1.xdf1, &xe1.xdf2, xpp->flags) < 0 ||
if (xdl_change_compact(&xe2.xdf1, &xe2.xdf2, xpp->flags) < 0 ||
xdl_change_compact(&xe2.xdf2, &xe2.xdf1, xpp->flags) < 0 ||
xdl_build_script(&xe2, &xscr2) < 0) {
+ xdl_free_script(xscr1);
+ xdl_free_env(&xe1);
xdl_free_env(&xe2);
return -1;
}
memcpy(result->ptr, mf1->ptr, mf1->size);
result->size = mf1->size;
} else {
- status = xdl_do_merge(&xe1, xscr1, name1,
- &xe2, xscr2, name2,
- flags, xmp, result);
+ status = xdl_do_merge(&xe1, xscr1,
+ &xe2, xscr2,
+ xmp, result);
}
xdl_free_script(xscr1);
xdl_free_script(xscr2);