Revision c308b9c25d54c72977d16155ae04e37f3490d5ac authored by Will Palmer on 17 April 2010, 16:55:26 UTC, committed by Junio C Hamano on 17 April 2010, 18:50:32 UTC
The description for core.autocrlf refers to reads from / writes to "the filesystem", the only use of this rather ambiguous term, which technically could be referring to the git object database. (All other mentions are part of phrases such as "..filesystems (like NFS).."). Other sections, including the section on core.safecrlf, use the term "work tree" for the same purpose as the term "the filesystem" is used in the core.autocrlf section, so that seems like a good alternative, which makes it clearer what direction the addition/removal of CR characters occurs in. Signed-off-by: Will Palmer <wmpalmer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent f78683f
merge-file.c
#include "cache.h"
#include "run-command.h"
#include "xdiff-interface.h"
#include "ll-merge.h"
#include "blob.h"
static int fill_mmfile_blob(mmfile_t *f, struct blob *obj)
{
void *buf;
unsigned long size;
enum object_type type;
buf = read_sha1_file(obj->object.sha1, &type, &size);
if (!buf)
return -1;
if (type != OBJ_BLOB)
return -1;
f->ptr = buf;
f->size = size;
return 0;
}
static void free_mmfile(mmfile_t *f)
{
free(f->ptr);
}
static void *three_way_filemerge(const char *path, mmfile_t *base, mmfile_t *our, mmfile_t *their, unsigned long *size)
{
int merge_status;
mmbuffer_t res;
merge_status = ll_merge(&res, path, base,
our, ".our", their, ".their", 0);
if (merge_status < 0)
return NULL;
*size = res.size;
return res.ptr;
}
static int common_outf(void *priv_, mmbuffer_t *mb, int nbuf)
{
int i;
mmfile_t *dst = priv_;
for (i = 0; i < nbuf; i++) {
memcpy(dst->ptr + dst->size, mb[i].ptr, mb[i].size);
dst->size += mb[i].size;
}
return 0;
}
static int generate_common_file(mmfile_t *res, mmfile_t *f1, mmfile_t *f2)
{
unsigned long size = f1->size < f2->size ? f1->size : f2->size;
void *ptr = xmalloc(size);
xpparam_t xpp;
xdemitconf_t xecfg;
xdemitcb_t ecb;
memset(&xpp, 0, sizeof(xpp));
xpp.flags = XDF_NEED_MINIMAL;
memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 3;
xecfg.flags = XDL_EMIT_COMMON;
ecb.outf = common_outf;
res->ptr = ptr;
res->size = 0;
ecb.priv = res;
return xdi_diff(f1, f2, &xpp, &xecfg, &ecb);
}
void *merge_file(const char *path, struct blob *base, struct blob *our, struct blob *their, unsigned long *size)
{
void *res = NULL;
mmfile_t f1, f2, common;
/*
* Removed in either branch?
*
* NOTE! This depends on the caller having done the
* proper warning about removing a file that got
* modified in the other branch!
*/
if (!our || !their) {
enum object_type type;
if (base)
return NULL;
if (!our)
our = their;
return read_sha1_file(our->object.sha1, &type, size);
}
if (fill_mmfile_blob(&f1, our) < 0)
goto out_no_mmfile;
if (fill_mmfile_blob(&f2, their) < 0)
goto out_free_f1;
if (base) {
if (fill_mmfile_blob(&common, base) < 0)
goto out_free_f2_f1;
} else {
if (generate_common_file(&common, &f1, &f2) < 0)
goto out_free_f2_f1;
}
res = three_way_filemerge(path, &common, &f1, &f2, size);
free_mmfile(&common);
out_free_f2_f1:
free_mmfile(&f2);
out_free_f1:
free_mmfile(&f1);
out_no_mmfile:
return res;
}
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