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tornavis/source/blender/blenkernel/intern/bpath.c

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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/** \file
* \ingroup bli
*/
/* TODO,
* currently there are some cases we don't support.
* - passing output paths to the visitor?, like render out.
* - passing sequence strips with many images.
* - passing directory paths - visitors don't know which path is a dir or a file.
* */
#include <sys/stat.h>
#include <assert.h>
#include <string.h>
/* path/file handling stuff */
#ifndef WIN32
# include <dirent.h>
# include <unistd.h>
#else
# include "BLI_winstuff.h"
# include <io.h>
#endif
#include "MEM_guardedalloc.h"
#include "DNA_brush_types.h"
#include "DNA_cachefile_types.h"
#include "DNA_fluid_types.h"
#include "DNA_freestyle_types.h"
#include "DNA_image_types.h"
#include "DNA_material_types.h"
#include "DNA_mesh_types.h"
#include "DNA_modifier_types.h"
#include "DNA_movieclip_types.h"
#include "DNA_node_types.h"
#include "DNA_object_fluidsim_types.h"
#include "DNA_object_force_types.h"
#include "DNA_object_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h"
#include "DNA_sequence_types.h"
#include "DNA_sound_types.h"
#include "DNA_text_types.h"
#include "DNA_texture_types.h"
#include "DNA_vfont_types.h"
#include "DNA_volume_types.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "BKE_font.h"
#include "BKE_image.h"
#include "BKE_lib_id.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_report.h"
#include "BKE_sequencer.h"
#include "BKE_bpath.h" /* own include */
#include "CLG_log.h"
#ifndef _MSC_VER
# include "BLI_strict_flags.h"
#endif
static CLG_LogRef LOG = {"bke.bpath"};
/* -------------------------------------------------------------------- */
/** \name Check Missing Files
* \{ */
static bool checkMissingFiles_visit_cb(void *userdata,
char *UNUSED(path_dst),
const char *path_src)
{
ReportList *reports = (ReportList *)userdata;
if (!BLI_exists(path_src)) {
BKE_reportf(reports, RPT_WARNING, "Path '%s' not found", path_src);
}
return false;
}
/* high level function */
void BKE_bpath_missing_files_check(Main *bmain, ReportList *reports)
{
BKE_bpath_traverse_main(bmain,
checkMissingFiles_visit_cb,
BKE_BPATH_TRAVERSE_ABS | BKE_BPATH_TRAVERSE_SKIP_PACKED,
reports);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Rebase Relative Paths
* \{ */
typedef struct BPathRebase_Data {
const char *basedir_src;
const char *basedir_dst;
ReportList *reports;
int count_tot;
int count_changed;
int count_failed;
} BPathRebase_Data;
static bool bpath_relative_rebase_visit_cb(void *userdata, char *path_dst, const char *path_src)
{
BPathRebase_Data *data = (BPathRebase_Data *)userdata;
data->count_tot++;
if (BLI_path_is_rel(path_src)) {
char filepath[(FILE_MAXDIR * 2) + FILE_MAXFILE];
BLI_strncpy(filepath, path_src, FILE_MAX);
if (BLI_path_abs(filepath, data->basedir_src)) {
BLI_path_normalize(NULL, filepath);
/* This may fail, if so it's fine to leave absolute since the path is still valid. */
BLI_path_rel(filepath, data->basedir_dst);
BLI_strncpy(path_dst, filepath, FILE_MAX);
data->count_changed++;
return true;
}
else {
/* Failed to make relative path absolute. */
BLI_assert(0);
BKE_reportf(data->reports, RPT_WARNING, "Path '%s' cannot be made absolute", path_src);
data->count_failed++;
return false;
}
return false;
}
else {
/* Absolute, leave this as-is. */
return false;
}
}
void BKE_bpath_relative_rebase(Main *bmain,
const char *basedir_src,
const char *basedir_dst,
ReportList *reports)
{
BPathRebase_Data data = {NULL};
const int flag = BKE_BPATH_TRAVERSE_SKIP_LIBRARY;
BLI_assert(basedir_src[0] != '\0');
BLI_assert(basedir_dst[0] != '\0');
data.basedir_src = basedir_src;
data.basedir_dst = basedir_dst;
data.reports = reports;
BKE_bpath_traverse_main(bmain, bpath_relative_rebase_visit_cb, flag, (void *)&data);
BKE_reportf(reports,
data.count_failed ? RPT_WARNING : RPT_INFO,
"Total files %d | Changed %d | Failed %d",
data.count_tot,
data.count_changed,
data.count_failed);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Make Paths Relative
* \{ */
typedef struct BPathRemap_Data {
const char *basedir;
ReportList *reports;
int count_tot;
int count_changed;
int count_failed;
} BPathRemap_Data;
static bool bpath_relative_convert_visit_cb(void *userdata, char *path_dst, const char *path_src)
{
BPathRemap_Data *data = (BPathRemap_Data *)userdata;
data->count_tot++;
if (BLI_path_is_rel(path_src)) {
return false; /* already relative */
}
else {
strcpy(path_dst, path_src);
BLI_path_rel(path_dst, data->basedir);
if (BLI_path_is_rel(path_dst)) {
data->count_changed++;
}
else {
BKE_reportf(data->reports, RPT_WARNING, "Path '%s' cannot be made relative", path_src);
data->count_failed++;
}
return true;
}
}
void BKE_bpath_relative_convert(Main *bmain, const char *basedir, ReportList *reports)
{
BPathRemap_Data data = {NULL};
const int flag = BKE_BPATH_TRAVERSE_SKIP_LIBRARY;
if (basedir[0] == '\0') {
CLOG_ERROR(&LOG, "basedir='', this is a bug");
return;
}
data.basedir = basedir;
data.reports = reports;
BKE_bpath_traverse_main(bmain, bpath_relative_convert_visit_cb, flag, (void *)&data);
BKE_reportf(reports,
data.count_failed ? RPT_WARNING : RPT_INFO,
"Total files %d | Changed %d | Failed %d",
data.count_tot,
data.count_changed,
data.count_failed);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Make Paths Absolute
* \{ */
static bool bpath_absolute_convert_visit_cb(void *userdata, char *path_dst, const char *path_src)
{
BPathRemap_Data *data = (BPathRemap_Data *)userdata;
data->count_tot++;
if (BLI_path_is_rel(path_src) == false) {
return false; /* already absolute */
}
else {
strcpy(path_dst, path_src);
BLI_path_abs(path_dst, data->basedir);
if (BLI_path_is_rel(path_dst) == false) {
data->count_changed++;
}
else {
BKE_reportf(data->reports, RPT_WARNING, "Path '%s' cannot be made absolute", path_src);
data->count_failed++;
}
return true;
}
}
/* similar to BKE_bpath_relative_convert - keep in sync! */
void BKE_bpath_absolute_convert(Main *bmain, const char *basedir, ReportList *reports)
{
BPathRemap_Data data = {NULL};
const int flag = BKE_BPATH_TRAVERSE_SKIP_LIBRARY;
if (basedir[0] == '\0') {
CLOG_ERROR(&LOG, "basedir='', this is a bug");
return;
}
data.basedir = basedir;
data.reports = reports;
BKE_bpath_traverse_main(bmain, bpath_absolute_convert_visit_cb, flag, (void *)&data);
BKE_reportf(reports,
data.count_failed ? RPT_WARNING : RPT_INFO,
"Total files %d | Changed %d | Failed %d",
data.count_tot,
data.count_changed,
data.count_failed);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Find Missing Files
* \{ */
/**
* find this file recursively, use the biggest file so thumbnails don't get used by mistake
* \param filename_new: the path will be copied here, caller must initialize as empty string.
* \param dirname: subdir to search
* \param filename: set this filename
* \param filesize: filesize for the file
*
* \returns found: 1/0.
*/
#define MAX_RECUR 16
static bool missing_files_find__recursive(char *filename_new,
const char *dirname,
const char *filename,
int64_t *r_filesize,
int *r_recur_depth)
{
/* file searching stuff */
DIR *dir;
struct dirent *de;
BLI_stat_t status;
char path[FILE_MAX];
int64_t size;
bool found = false;
dir = opendir(dirname);
if (dir == NULL) {
return found;
}
if (*r_filesize == -1) {
*r_filesize = 0; /* dir opened fine */
}
while ((de = readdir(dir)) != NULL) {
if (FILENAME_IS_CURRPAR(de->d_name)) {
continue;
}
BLI_join_dirfile(path, sizeof(path), dirname, de->d_name);
if (BLI_stat(path, &status) == -1) {
continue; /* cant stat, don't bother with this file, could print debug info here */
}
if (S_ISREG(status.st_mode)) { /* is file */
if (BLI_path_ncmp(filename, de->d_name, FILE_MAX) == 0) { /* name matches */
/* open the file to read its size */
size = status.st_size;
if ((size > 0) && (size > *r_filesize)) { /* find the biggest file */
*r_filesize = size;
BLI_strncpy(filename_new, path, FILE_MAX);
found = true;
}
}
}
else if (S_ISDIR(status.st_mode)) { /* is subdir */
if (*r_recur_depth <= MAX_RECUR) {
(*r_recur_depth)++;
found |= missing_files_find__recursive(
filename_new, path, filename, r_filesize, r_recur_depth);
(*r_recur_depth)--;
}
}
}
closedir(dir);
return found;
}
typedef struct BPathFind_Data {
const char *basedir;
const char *searchdir;
ReportList *reports;
bool find_all;
} BPathFind_Data;
static bool missing_files_find__visit_cb(void *userdata, char *path_dst, const char *path_src)
{
BPathFind_Data *data = (BPathFind_Data *)userdata;
char filename_new[FILE_MAX];
int64_t filesize = -1;
int recur_depth = 0;
bool found;
if (data->find_all == false) {
if (BLI_exists(path_src)) {
return false;
}
}
filename_new[0] = '\0';
found = missing_files_find__recursive(
filename_new, data->searchdir, BLI_path_basename(path_src), &filesize, &recur_depth);
if (filesize == -1) { /* could not open dir */
BKE_reportf(data->reports,
RPT_WARNING,
"Could not open directory '%s'",
BLI_path_basename(data->searchdir));
return false;
}
else if (found == false) {
BKE_reportf(data->reports,
RPT_WARNING,
"Could not find '%s' in '%s'",
BLI_path_basename(path_src),
data->searchdir);
return false;
}
else {
bool was_relative = BLI_path_is_rel(path_dst);
BLI_strncpy(path_dst, filename_new, FILE_MAX);
/* keep path relative if the previous one was relative */
if (was_relative) {
BLI_path_rel(path_dst, data->basedir);
}
return true;
}
}
void BKE_bpath_missing_files_find(Main *bmain,
const char *searchpath,
ReportList *reports,
const bool find_all)
{
struct BPathFind_Data data = {NULL};
const int flag = BKE_BPATH_TRAVERSE_ABS | BKE_BPATH_TRAVERSE_RELOAD_EDITED;
data.basedir = BKE_main_blendfile_path(bmain);
data.reports = reports;
data.searchdir = searchpath;
data.find_all = find_all;
BKE_bpath_traverse_main(bmain, missing_files_find__visit_cb, flag, (void *)&data);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Generic File Path Traversal API
* \{ */
/**
* Run a visitor on a string, replacing the contents of the string as needed.
*/
static bool rewrite_path_fixed(char *path,
BPathVisitor visit_cb,
const char *absbase,
void *userdata)
{
char path_src_buf[FILE_MAX];
const char *path_src;
char path_dst[FILE_MAX];
if (absbase) {
BLI_strncpy(path_src_buf, path, sizeof(path_src_buf));
BLI_path_abs(path_src_buf, absbase);
path_src = path_src_buf;
}
else {
path_src = path;
}
/* so functions can check old value */
BLI_strncpy(path_dst, path, FILE_MAX);
if (visit_cb(userdata, path_dst, path_src)) {
BLI_strncpy(path, path_dst, FILE_MAX);
return true;
}
else {
return false;
}
}
static bool rewrite_path_fixed_dirfile(char path_dir[FILE_MAXDIR],
char path_file[FILE_MAXFILE],
BPathVisitor visit_cb,
const char *absbase,
void *userdata)
{
char path_src[FILE_MAX];
char path_dst[FILE_MAX];
BLI_join_dirfile(path_src, sizeof(path_src), path_dir, path_file);
/* so functions can check old value */
BLI_strncpy(path_dst, path_src, FILE_MAX);
if (absbase) {
BLI_path_abs(path_src, absbase);
}
if (visit_cb(userdata, path_dst, (const char *)path_src)) {
BLI_split_dirfile(path_dst, path_dir, path_file, FILE_MAXDIR, FILE_MAXFILE);
return true;
}
else {
return false;
}
}
static bool rewrite_path_alloc(char **path,
BPathVisitor visit_cb,
const char *absbase,
void *userdata)
{
char path_src_buf[FILE_MAX];
const char *path_src;
char path_dst[FILE_MAX];
if (absbase) {
BLI_strncpy(path_src_buf, *path, sizeof(path_src_buf));
BLI_path_abs(path_src_buf, absbase);
path_src = path_src_buf;
}
else {
path_src = *path;
}
if (visit_cb(userdata, path_dst, path_src)) {
MEM_freeN(*path);
(*path) = BLI_strdup(path_dst);
return true;
}
else {
return false;
}
}
/**
* Run visitor function 'visit' on all paths contained in 'id'.
*/
void BKE_bpath_traverse_id(
Main *bmain, ID *id, BPathVisitor visit_cb, const int flag, void *bpath_user_data)
{
const char *absbase = (flag & BKE_BPATH_TRAVERSE_ABS) ? ID_BLEND_PATH(bmain, id) : NULL;
if ((flag & BKE_BPATH_TRAVERSE_SKIP_LIBRARY) && ID_IS_LINKED(id)) {
return;
}
switch (GS(id->name)) {
case ID_IM: {
Image *ima;
ima = (Image *)id;
if (BKE_image_has_packedfile(ima) == false || (flag & BKE_BPATH_TRAVERSE_SKIP_PACKED) == 0) {
/* Skip empty file paths, these are typically from generated images and
* don't make sense to add directories to until the image has been saved
* once to give it a meaningful value. */
if (ELEM(ima->source, IMA_SRC_FILE, IMA_SRC_MOVIE, IMA_SRC_SEQUENCE, IMA_SRC_TILED) &&
ima->name[0]) {
if (rewrite_path_fixed(ima->name, visit_cb, absbase, bpath_user_data)) {
if (flag & BKE_BPATH_TRAVERSE_RELOAD_EDITED) {
if (!BKE_image_has_packedfile(ima) &&
/* image may have been painted onto (and not saved, T44543) */
!BKE_image_is_dirty(ima)) {
BKE_image_signal(bmain, ima, NULL, IMA_SIGNAL_RELOAD);
}
}
}
}
}
break;
}
case ID_BR: {
Brush *brush = (Brush *)id;
if (brush->icon_filepath[0]) {
rewrite_path_fixed(brush->icon_filepath, visit_cb, absbase, bpath_user_data);
}
break;
}
case ID_OB: {
Object *ob = (Object *)id;
ModifierData *md;
ParticleSystem *psys;
#define BPATH_TRAVERSE_POINTCACHE(ptcaches) \
{ \
PointCache *cache; \
for (cache = (ptcaches).first; cache; cache = cache->next) { \
if (cache->flag & PTCACHE_DISK_CACHE) { \
rewrite_path_fixed(cache->path, visit_cb, absbase, bpath_user_data); \
} \
} \
} \
(void)0
for (md = ob->modifiers.first; md; md = md->next) {
if (md->type == eModifierType_Fluidsim) {
FluidsimModifierData *fluidmd = (FluidsimModifierData *)md;
if (fluidmd->fss) {
rewrite_path_fixed(fluidmd->fss->surfdataPath, visit_cb, absbase, bpath_user_data);
}
}
else if (md->type == eModifierType_Fluid) {
FluidModifierData *mmd = (FluidModifierData *)md;
if (mmd->type & MOD_FLUID_TYPE_DOMAIN && mmd->domain) {
rewrite_path_fixed(mmd->domain->cache_directory, visit_cb, absbase, bpath_user_data);
}
}
else if (md->type == eModifierType_Cloth) {
ClothModifierData *clmd = (ClothModifierData *)md;
BPATH_TRAVERSE_POINTCACHE(clmd->ptcaches);
}
else if (md->type == eModifierType_Ocean) {
OceanModifierData *omd = (OceanModifierData *)md;
rewrite_path_fixed(omd->cachepath, visit_cb, absbase, bpath_user_data);
}
else if (md->type == eModifierType_MeshCache) {
MeshCacheModifierData *mcmd = (MeshCacheModifierData *)md;
rewrite_path_fixed(mcmd->filepath, visit_cb, absbase, bpath_user_data);
}
}
if (ob->soft) {
BPATH_TRAVERSE_POINTCACHE(ob->soft->shared->ptcaches);
}
for (psys = ob->particlesystem.first; psys; psys = psys->next) {
BPATH_TRAVERSE_POINTCACHE(psys->ptcaches);
}
#undef BPATH_TRAVERSE_POINTCACHE
break;
}
case ID_SO: {
bSound *sound = (bSound *)id;
if (sound->packedfile == NULL || (flag & BKE_BPATH_TRAVERSE_SKIP_PACKED) == 0) {
rewrite_path_fixed(sound->name, visit_cb, absbase, bpath_user_data);
}
break;
}
case ID_VO: {
Volume *volume = (Volume *)id;
if (volume->packedfile == NULL || (flag & BKE_BPATH_TRAVERSE_SKIP_PACKED) == 0) {
rewrite_path_fixed(volume->filepath, visit_cb, absbase, bpath_user_data);
}
break;
}
case ID_TXT:
if (((Text *)id)->name) {
rewrite_path_alloc(&((Text *)id)->name, visit_cb, absbase, bpath_user_data);
}
break;
case ID_VF: {
VFont *vfont = (VFont *)id;
if (vfont->packedfile == NULL || (flag & BKE_BPATH_TRAVERSE_SKIP_PACKED) == 0) {
if (BKE_vfont_is_builtin(vfont) == false) {
rewrite_path_fixed(((VFont *)id)->name, visit_cb, absbase, bpath_user_data);
}
}
break;
}
case ID_MA: {
Material *ma = (Material *)id;
bNodeTree *ntree = ma->nodetree;
if (ntree) {
bNode *node;
for (node = ntree->nodes.first; node; node = node->next) {
if (node->type == SH_NODE_SCRIPT) {
NodeShaderScript *nss = (NodeShaderScript *)node->storage;
rewrite_path_fixed(nss->filepath, visit_cb, absbase, bpath_user_data);
}
else if (node->type == SH_NODE_TEX_IES) {
NodeShaderTexIES *ies = (NodeShaderTexIES *)node->storage;
rewrite_path_fixed(ies->filepath, visit_cb, absbase, bpath_user_data);
}
}
}
break;
}
case ID_NT: {
bNodeTree *ntree = (bNodeTree *)id;
bNode *node;
if (ntree->type == NTREE_SHADER) {
/* same as lines above */
for (node = ntree->nodes.first; node; node = node->next) {
if (node->type == SH_NODE_SCRIPT) {
NodeShaderScript *nss = (NodeShaderScript *)node->storage;
rewrite_path_fixed(nss->filepath, visit_cb, absbase, bpath_user_data);
}
else if (node->type == SH_NODE_TEX_IES) {
NodeShaderTexIES *ies = (NodeShaderTexIES *)node->storage;
rewrite_path_fixed(ies->filepath, visit_cb, absbase, bpath_user_data);
}
}
}
break;
}
case ID_SCE: {
Scene *scene = (Scene *)id;
if (scene->ed) {
Sequence *seq;
SEQ_BEGIN (scene->ed, seq) {
if (SEQ_HAS_PATH(seq)) {
StripElem *se = seq->strip->stripdata;
if (ELEM(seq->type, SEQ_TYPE_MOVIE, SEQ_TYPE_SOUND_RAM) && se) {
rewrite_path_fixed_dirfile(
seq->strip->dir, se->name, visit_cb, absbase, bpath_user_data);
}
else if ((seq->type == SEQ_TYPE_IMAGE) && se) {
/* might want an option not to loop over all strips */
unsigned int len = (unsigned int)MEM_allocN_len(se) / (unsigned int)sizeof(*se);
unsigned int i;
if (flag & BKE_BPATH_TRAVERSE_SKIP_MULTIFILE) {
/* only operate on one path */
len = MIN2(1u, len);
}
for (i = 0; i < len; i++, se++) {
rewrite_path_fixed_dirfile(
seq->strip->dir, se->name, visit_cb, absbase, bpath_user_data);
}
}
else {
/* simple case */
rewrite_path_fixed(seq->strip->dir, visit_cb, absbase, bpath_user_data);
}
}
}
SEQ_END;
}
break;
}
case ID_ME: {
Mesh *me = (Mesh *)id;
if (me->ldata.external) {
rewrite_path_fixed(me->ldata.external->filename, visit_cb, absbase, bpath_user_data);
}
break;
}
case ID_LI: {
Library *lib = (Library *)id;
/* keep packedfile paths always relative to the blend */
if (lib->packedfile == NULL) {
if (rewrite_path_fixed(lib->name, visit_cb, absbase, bpath_user_data)) {
BKE_library_filepath_set(bmain, lib, lib->name);
}
}
break;
}
case ID_MC: {
MovieClip *clip = (MovieClip *)id;
rewrite_path_fixed(clip->name, visit_cb, absbase, bpath_user_data);
break;
}
case ID_CF: {
CacheFile *cache_file = (CacheFile *)id;
rewrite_path_fixed(cache_file->filepath, visit_cb, absbase, bpath_user_data);
break;
}
default:
/* Nothing to do for other IDs that don't contain file paths. */
break;
}
}
void BKE_bpath_traverse_id_list(
Main *bmain, ListBase *lb, BPathVisitor visit_cb, const int flag, void *bpath_user_data)
{
ID *id;
for (id = lb->first; id; id = id->next) {
BKE_bpath_traverse_id(bmain, id, visit_cb, flag, bpath_user_data);
}
}
void BKE_bpath_traverse_main(Main *bmain,
BPathVisitor visit_cb,
const int flag,
void *bpath_user_data)
{
ListBase *lbarray[MAX_LIBARRAY];
int a = set_listbasepointers(bmain, lbarray);
while (a--) {
BKE_bpath_traverse_id_list(bmain, lbarray[a], visit_cb, flag, bpath_user_data);
}
}
/**
* Rewrites a relative path to be relative to the main file - unless the path is
* absolute, in which case it is not altered.
*/
bool BKE_bpath_relocate_visitor(void *pathbase_v, char *path_dst, const char *path_src)
{
/* be sure there is low chance of the path being too short */
char filepath[(FILE_MAXDIR * 2) + FILE_MAXFILE];
const char *base_new = ((char **)pathbase_v)[0];
const char *base_old = ((char **)pathbase_v)[1];
if (BLI_path_is_rel(base_old)) {
CLOG_ERROR(&LOG, "old base path '%s' is not absolute.", base_old);
return false;
}
/* Make referenced file absolute. This would be a side-effect of
* BLI_path_normalize, but we do it explicitly so we know if it changed. */
BLI_strncpy(filepath, path_src, FILE_MAX);
if (BLI_path_abs(filepath, base_old)) {
/* Path was relative and is now absolute. Remap.
* Important BLI_path_normalize runs before the path is made relative
* because it wont work for paths that start with "//../" */
BLI_path_normalize(base_new, filepath);
BLI_path_rel(filepath, base_new);
BLI_strncpy(path_dst, filepath, FILE_MAX);
return true;
}
else {
/* Path was not relative to begin with. */
return false;
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Backup/Restore/Free functions,
*
* \note These functions assume the data won't change order.
* \{ */
struct PathStore {
struct PathStore *next, *prev;
};
static bool bpath_list_append(void *userdata, char *UNUSED(path_dst), const char *path_src)
{
/* store the path and string in a single alloc */
ListBase *ls = userdata;
size_t path_size = strlen(path_src) + 1;
struct PathStore *path_store = MEM_mallocN(sizeof(struct PathStore) + path_size, __func__);
char *filepath = (char *)(path_store + 1);
memcpy(filepath, path_src, path_size);
BLI_addtail(ls, path_store);
return false;
}
static bool bpath_list_restore(void *userdata, char *path_dst, const char *path_src)
{
/* assume ls->first wont be NULL because the number of paths can't change!
* (if they do caller is wrong) */
ListBase *ls = userdata;
struct PathStore *path_store = ls->first;
const char *filepath = (char *)(path_store + 1);
bool ret;
if (STREQ(path_src, filepath)) {
ret = false;
}
else {
BLI_strncpy(path_dst, filepath, FILE_MAX);
ret = true;
}
BLI_freelinkN(ls, path_store);
return ret;
}
/* return ls_handle */
void *BKE_bpath_list_backup(Main *bmain, const int flag)
{
ListBase *ls = MEM_callocN(sizeof(ListBase), __func__);
BKE_bpath_traverse_main(bmain, bpath_list_append, flag, ls);
return ls;
}
void BKE_bpath_list_restore(Main *bmain, const int flag, void *ls_handle)
{
ListBase *ls = ls_handle;
BKE_bpath_traverse_main(bmain, bpath_list_restore, flag, ls);
}
void BKE_bpath_list_free(void *ls_handle)
{
ListBase *ls = ls_handle;
BLI_assert(BLI_listbase_is_empty(ls)); /* assumes we were used */
BLI_freelistN(ls);
MEM_freeN(ls);
}
/** \} */
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