ext/gitdll/gitdll.c

   1 // gitdll.cpp : Defines the exported functions for the DLL application.
   2 //
   3
   4 #include "stdafx.h"
   5 #include "git-compat-util.h"
   6 #include "msvc.h"
   7 #include "gitdll.h"
   8 #include "cache.h"
   9 #include "commit.h"
  10 #include "diff.h"
  11 #include "revision.h"
  12 #include "diffcore.h"
  13 #include "dir.h"
  14 #include "builtin.h"
  15 #include "exec_cmd.h"
  16 #include "cache.h"
  17 #include "quote.h"
  18 #include "run-command.h"
  19
  20 const char git_version_string[] = GIT_VERSION;
  21
  22
  23 #if 0
  24
  25 // This is an example of an exported variable
  26 GITDLL_API int ngitdll=0;
  27
  28 // This is an example of an exported function.
  29 GITDLL_API int fngitdll(void)
  30 {
  31         return 42;
  32 }
  33
  34 // This is the constructor of a class that has been exported.
  35 // see gitdll.h for the class definition
  36 Cgitdll::Cgitdll()
  37 {
  38         return;
  39 }
  40 #endif
  41
  42 extern char g_last_error[];
  43 void * g_prefix;
  44
  45 char * get_git_last_error()
  46 {
  47         return g_last_error;
  48 }
  49
  50 extern void die_dll(const char *err, va_list params);
  51
  52 void dll_entry()
  53 {
  54         set_die_routine(die_dll);
  55 }
  56
  57 int git_get_sha1(const char *name, GIT_HASH sha1)
  58 {
  59         return get_sha1(name,sha1);
  60 }
  61
  62 static int convert_slash(char * path)
  63 {
  64         while(*path)
  65         {
  66                 if(*path == '\\' )
  67                         *path = '/';
  68                 path++;
  69         }
  70         return 0;
  71 }
  72
  73 int git_init()
  74 {
  75         char *home;
  76         char path[MAX_PATH+1];
  77         char *prefix;
  78         int ret;
  79         size_t homesize,size;
  80
  81         _fmode = _O_BINARY;
  82         _setmode(_fileno(stdin), _O_BINARY);
  83         _setmode(_fileno(stdout), _O_BINARY);
  84         _setmode(_fileno(stderr), _O_BINARY);
  85
  86         // set HOME if not set already
  87         getenv_s(&homesize, NULL, 0, "HOME");
  88         if (!homesize)
  89         {
  90                 _dupenv_s(&home,&size,"USERPROFILE");
  91                 _putenv_s("HOME",home);
  92                 free(home);
  93         }
  94         GetModuleFileName(NULL, path, MAX_PATH);
  95         convert_slash(path);
  96
  97         git_extract_argv0_path(path);
  98         g_prefix = prefix = setup_git_directory();
  99         ret = git_config(git_default_config, NULL);
 100
 101         if (!homesize)
 102         {
 103                 _putenv_s("HOME","");/* clear home evironment to avoid affact third part software*/
 104         }
 105
 106         return ret;
 107 }
 108
 109 static int git_parse_commit_author(struct GIT_COMMIT_AUTHOR *author, char *pbuff)
 110 {
 111         char *end;
 112
 113         author->Name=pbuff;
 114         end=strchr(pbuff,'<');
 115         if( end == 0)
 116         {
 117                 return -1;
 118         }
 119         author->NameSize = end - pbuff - 1;
 120
 121         pbuff = end +1;
 122         end = strchr(pbuff, '>');
 123         if( end == 0)
 124                 return -1;
 125
 126         author->Email = pbuff ;
 127         author->EmailSize = end - pbuff;
 128
 129         pbuff = end + 2;
 130
 131         author->Date = atol(pbuff);
 132         end =  strchr(pbuff, ' ');
 133         if( end == 0 )
 134                 return -1;
 135
 136         pbuff=end;
 137         author->TimeZone = atol(pbuff);
 138
 139         return 0;
 140 }
 141
 142 int git_parse_commit(GIT_COMMIT *commit)
 143 {
 144         int ret = 0;
 145         char *pbuf;
 146         char *end;
 147         struct commit *p;
 148
 149         p= (struct commit *)commit->m_pGitCommit;
 150
 151         memcpy(commit->m_hash,p->object.sha1,GIT_HASH_SIZE);
 152
 153         commit->m_Encode = NULL;
 154         commit->m_EncodeSize = 0;
 155
 156         if(p->buffer == NULL)
 157                 return -1;
 158
 159         pbuf = p->buffer;
 160         while(pbuf)
 161         {
 162                 if( strncmp(pbuf,"author",6) == 0)
 163                 {
 164                         ret = git_parse_commit_author(&commit->m_Author,pbuf + 7);
 165                         if(ret)
 166                                 return ret;
 167                 }
 168                 if( strncmp(pbuf, "committer",9) == 0)
 169                 {
 170                         ret =  git_parse_commit_author(&commit->m_Committer,pbuf + 10);
 171                         if(ret)
 172                                 return ret;
 173
 174                         pbuf = strchr(pbuf,'\n');
 175                         if(pbuf == NULL)
 176                                 return -1;
 177
 178                         while((*pbuf) && (*pbuf == '\n'))
 179                                 pbuf ++;
 180
 181                         if( strncmp(pbuf, "encoding",8) == 0 )
 182                         {
 183                                 pbuf += 9;
 184                                 commit->m_Encode=pbuf;
 185                                 end = strchr(pbuf,'\n');
 186                                 commit->m_EncodeSize=end -pbuf;
 187
 188                                 pbuf = end +1;
 189                                 while((*pbuf) && (*pbuf == '\n'))
 190                                         pbuf ++;
 191                         }
 192                         commit->m_Subject=pbuf;
 193                         end = strchr(pbuf,'\n');
 194                         if( end == 0)
 195                                 commit->m_SubjectSize = strlen(pbuf);
 196                         else
 197                         {
 198                                 commit->m_SubjectSize = end - pbuf;
 199                                 pbuf = end +1;
 200                                 commit->m_Body = pbuf;
 201                                 commit->m_BodySize = strlen(pbuf);
 202                                 return 0;
 203                         }
 204
 205                 }
 206
 207                 pbuf = strchr(pbuf,'\n');
 208                 if(pbuf)
 209                         pbuf ++;
 210         }
 211         return 0;
 212 }
 213
 214 int git_get_commit_from_hash(GIT_COMMIT *commit, GIT_HASH hash)
 215 {
 216         int ret = 0;
 217
 218         struct commit *p;
 219
 220         memset(commit,0,sizeof(GIT_COMMIT));
 221
 222         commit->m_pGitCommit = p = lookup_commit(hash);
 223
 224         if(commit == NULL)
 225                 return -1;
 226
 227         if(p == NULL)
 228                 return -1;
 229
 230         ret = parse_commit(p);
 231         if( ret )
 232                 return ret;
 233
 234         return git_parse_commit(commit);
 235 }
 236
 237 int git_get_commit_first_parent(GIT_COMMIT *commit,GIT_COMMIT_LIST *list)
 238 {
 239         struct commit *p = commit->m_pGitCommit;
 240
 241         if(list == NULL)
 242                 return -1;
 243
 244         *list = (GIT_COMMIT_LIST*)p->parents;
 245         return 0;
 246 }
 247 int git_get_commit_next_parent(GIT_COMMIT_LIST *list, GIT_HASH hash)
 248 {
 249         struct commit_list *l = *(struct commit_list **)list;
 250         if(list == NULL || l==NULL)
 251                 return -1;
 252
 253         if(hash)
 254                 memcpy(hash, l->item->object.sha1, GIT_HASH_SIZE);
 255
 256         *list = (GIT_COMMIT_LIST *)l->next;
 257         return 0;
 258
 259 }
 260
 261
 262 int git_free_commit(GIT_COMMIT *commit)
 263 {
 264         struct commit *p = commit->m_pGitCommit;
 265
 266         if( p->parents)
 267                 free_commit_list(p->parents);
 268
 269         if( p->buffer )
 270         {
 271                 free(p->buffer);
 272                 p->buffer=NULL;
 273                 p->object.parsed=0;
 274                 p->parents=0;
 275                 p->tree=0;
 276         }
 277         memset(commit,0,sizeof(GIT_COMMIT));
 278         return 0;
 279 }
 280
 281 char **strtoargv(char *arg, int *size)
 282 {
 283         int count=0;
 284         char *p=arg;
 285         char **argv;
 286
 287         int i=0;
 288         while(*p)
 289         {
 290                 if(*p == '\\')
 291                         *p='/';
 292                 p++;
 293         }
 294         p=arg;
 295
 296         while(*p)
 297         {
 298                 if(*p == ' ')
 299                         count ++;
 300                 p++;
 301         }
 302
 303         argv=malloc(strlen(arg)+1 + (count +2)*sizeof(void*));
 304         p=(char*)(argv+count+2);
 305
 306         while(*arg)
 307         {
 308                 if(*arg != ' ')
 309                 {
 310                         char space=' ';
 311                         argv[i]=p;
 312
 313                         while(*arg)
 314                         {
 315                                 if(*arg == '"')
 316                                 {
 317                                         arg++;
 318                                         if(space == ' ')
 319                                                 space = '"';
 320                                         else
 321                                                 space = ' ';
 322                                 }
 323                                 if((*arg == space) || (*arg == 0))
 324                                         break;
 325
 326                                 *p++ = *arg++;
 327                         }
 328                         i++;
 329                         *p++=0;
 330                 }
 331                 if(*arg == 0)
 332                         break;
 333                 arg++;
 334         }
 335         argv[i]=NULL;
 336         *size = i;
 337         return argv;
 338 }
 339 int git_open_log(GIT_LOG * handle, char * arg)
 340 {
 341         struct rev_info *p_Rev;
 342         char ** argv=0;
 343         int argc=0;
 344         unsigned int i=0;
 345         struct setup_revision_opt opt;
 346
 347         /* clear flags */
 348         unsigned int obj_size = get_max_object_index();
 349         for(i =0; i<obj_size; i++)
 350         {
 351                 struct object *ob= get_indexed_object(i);
 352                 if(ob)
 353                         ob->flags=0;
 354         }
 355
 356         if(arg != NULL)
 357                 argv = strtoargv(arg,&argc);
 358
 359         p_Rev = malloc(sizeof(struct rev_info));
 360         memset(p_Rev,0,sizeof(struct rev_info));
 361
 362         if(p_Rev == NULL)
 363                 return -1;
 364
 365         init_revisions(p_Rev, g_prefix);
 366         p_Rev->diff = 1;
 367
 368         memset(&opt, 0, sizeof(opt));
 369         opt.def = "HEAD";
 370
 371         cmd_log_init(argc, argv, g_prefix,p_Rev,&opt);
 372
 373         p_Rev->pPrivate = argv;
 374         *handle = p_Rev;
 375         return 0;
 376
 377 }
 378 int git_get_log_firstcommit(GIT_LOG handle)
 379 {
 380         return prepare_revision_walk(handle);
 381 }
 382
 383 int git_get_log_estimate_commit_count(GIT_LOG handle)
 384 {
 385         struct rev_info *p_Rev;
 386         p_Rev=(struct rev_info *)handle;
 387
 388         return estimate_commit_count(p_Rev, p_Rev->commits);
 389 }
 390
 391 int git_get_log_nextcommit(GIT_LOG handle, GIT_COMMIT *commit)
 392 {
 393         int ret =0;
 394
 395         if(commit == NULL)
 396                 return -1;
 397
 398         memset(commit, 0, sizeof(GIT_COMMIT));
 399
 400         commit->m_pGitCommit = get_revision(handle);
 401         if( commit->m_pGitCommit == NULL)
 402                 return -2;
 403
 404         ret=git_parse_commit(commit);
 405         if(ret)
 406                 return ret;
 407
 408         return 0;
 409 }
 410
 411 struct notes_tree **display_notes_trees;
 412 int git_close_log(GIT_LOG handle)
 413 {
 414         if(handle)
 415         {
 416                 struct rev_info *p_Rev;
 417                 p_Rev=(struct rev_info *)handle;
 418                 if(p_Rev->pPrivate)
 419                         free(p_Rev->pPrivate);
 420                 free(handle);
 421         }
 422
 423         free_notes(*display_notes_trees);
 424         display_notes_trees = 0;
 425         return 0;
 426 }
 427
 428 int git_open_diff(GIT_DIFF *diff, char * arg)
 429 {
 430         struct rev_info *p_Rev;
 431         char ** argv=0;
 432         int argc=0;
 433
 434         if(arg != NULL)
 435                 argv = strtoargv(arg,&argc);
 436
 437         p_Rev = malloc(sizeof(struct rev_info));
 438         memset(p_Rev,0,sizeof(struct rev_info));
 439
 440         p_Rev->pPrivate = argv;
 441         *diff = (GIT_DIFF)p_Rev;
 442
 443         init_revisions(p_Rev, g_prefix);
 444         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 445         p_Rev->abbrev = 0;
 446         p_Rev->diff = 1;
 447         argc = setup_revisions(argc, argv, p_Rev, NULL);
 448
 449         return 0;
 450 }
 451 int git_close_diff(GIT_DIFF handle)
 452 {
 453         git_diff_flush(handle);
 454         if(handle)
 455         {
 456                 struct rev_info *p_Rev;
 457                 p_Rev=(struct rev_info *)handle;
 458                 if(p_Rev->pPrivate)
 459                         free(p_Rev->pPrivate);
 460                 free(handle);
 461         }
 462         return 0;
 463 }
 464 int git_diff_flush(GIT_DIFF diff)
 465 {
 466         struct diff_queue_struct *q = &diff_queued_diff;
 467         struct rev_info *p_Rev;
 468         int i;
 469         p_Rev = (struct rev_info *)diff;
 470
 471         if(q->nr == 0)
 472                 return 0;
 473
 474         for (i = 0; i < q->nr; i++)
 475                 diff_free_filepair(q->queue[i]);
 476
 477         if(q->queue)
 478         {
 479                 free(q->queue);
 480                 q->queue = NULL;
 481                 q->nr = q->alloc = 0;
 482         }
 483
 484         if (p_Rev->diffopt.close_file)
 485                 fclose(p_Rev->diffopt.close_file);
 486
 487         free_diffstat_info(&p_Rev->diffstat);
 488         return 0;
 489 }
 490
 491 int git_root_diff(GIT_DIFF diff, GIT_HASH hash,GIT_FILE *file, int *count)
 492 {
 493         int ret;
 494         struct rev_info *p_Rev;
 495         int i;
 496         struct diff_queue_struct *q = &diff_queued_diff;
 497
 498         p_Rev = (struct rev_info *)diff;
 499
 500         ret=diff_root_tree_sha1(hash, "", &p_Rev->diffopt);
 501
 502         if(ret)
 503                 return ret;
 504
 505         diffcore_std(&p_Rev->diffopt);
 506
 507         memset(&p_Rev->diffstat, 0, sizeof(struct diffstat_t));
 508         for (i = 0; i < q->nr; i++) {
 509                 struct diff_filepair *p = q->queue[i];
 510                 //if (check_pair_status(p))
 511                 diff_flush_stat(p, &p_Rev->diffopt, &p_Rev->diffstat);
 512         }
 513
 514         if(file)
 515                 *file = q;
 516         if(count)
 517                 *count = q->nr;
 518
 519         return 0;
 520 }
 521
 522 int git_diff(GIT_DIFF diff, GIT_HASH hash1, GIT_HASH hash2, GIT_FILE * file, int *count)
 523 {
 524         struct rev_info *p_Rev;
 525         int ret;
 526         int i;
 527         struct diff_queue_struct *q = &diff_queued_diff;
 528
 529         p_Rev = (struct rev_info *)diff;
 530
 531         ret = diff_tree_sha1(hash1,hash2,"",&p_Rev->diffopt);
 532         if( ret )
 533                 return ret;
 534
 535         diffcore_std(&p_Rev->diffopt);
 536
 537         memset(&p_Rev->diffstat, 0, sizeof(struct diffstat_t));
 538         for (i = 0; i < q->nr; i++) {
 539                 struct diff_filepair *p = q->queue[i];
 540                 //if (check_pair_status(p))
 541                 diff_flush_stat(p, &p_Rev->diffopt, &p_Rev->diffstat);
 542         }
 543
 544         if(file)
 545                 *file = q;
 546         if(count)
 547                 *count = q->nr;
 548         return 0;
 549 }
 550
 551 int git_get_diff_file(GIT_DIFF diff,GIT_FILE file,int i, char **newname, char ** oldname,  int *status, int *IsBin, int *inc, int *dec)
 552 {
 553         struct diff_queue_struct *q = &diff_queued_diff;
 554         struct rev_info *p_Rev;
 555         p_Rev = (struct rev_info *)diff;
 556
 557         q = (struct diff_queue_struct *)file;
 558         if(file == 0)
 559                 return -1;
 560         if(i>=q->nr)
 561                 return -1;
 562
 563         if(newname)
 564                 *newname = q->queue[i]->two->path;
 565
 566         if(oldname)
 567                 *oldname = q->queue[i]->one->path;
 568
 569         if(status)
 570                 *status = q->queue[i]->status;
 571
 572         if(p_Rev->diffstat.files)
 573         {
 574                 int j;
 575                 for(j=0;j<p_Rev->diffstat.nr;j++)
 576                 {
 577                         if(strcmp(*newname,p_Rev->diffstat.files[j]->name)==0)
 578                                 break;
 579                 }
 580                 if( j== p_Rev->diffstat.nr)
 581                 {
 582                         *IsBin=1;
 583                         *inc=0;
 584                         *dec=0;
 585                         return 0;
 586                 }
 587                 if(IsBin)
 588                         *IsBin = p_Rev->diffstat.files[j]->is_binary;
 589                 if(inc)
 590                         *inc = p_Rev->diffstat.files[j]->added;
 591                 if(dec)
 592                         *dec = p_Rev->diffstat.files[j]->deleted;
 593         }else
 594         {
 595                 *IsBin=1;
 596                 *inc=0;
 597                 *dec=0;
 598         }
 599
 600         return 0;
 601 }
 602
 603 int git_read_tree(GIT_HASH hash,read_tree_fn_t fn, void *context)
 604 {
 605         struct tree * root;
 606         int ret;
 607         reprepare_packed_git();
 608         root = parse_tree_indirect(hash);
 609
 610         if (!root)
 611         {
 612                 free_all_pack();
 613                 return -1;
 614         }
 615         ret = read_tree_recursive(root,NULL,NULL,0,NULL,fn,context);
 616         free_all_pack();
 617         return ret;
 618 }
 619
 620 int git_add_exclude(const char *string, const char *base,
 621                                         int baselen, struct exclude_list *which)
 622 {
 623         add_exclude(string, base, baselen, which);
 624         return 0;
 625 }
 626
 627 int git_create_exclude_list(EXCLUDE_LIST *which)
 628 {
 629         *which = malloc(sizeof(struct exclude_list));
 630         memset(*which,0,sizeof(struct exclude_list));
 631         return 0;
 632 }
 633
 634 int git_free_exclude_list(EXCLUDE_LIST which)
 635 {
 636         int i=0;
 637         struct exclude_list *p = (struct exclude_list *) which;
 638
 639         for(i=0; i<p->nr;i++)
 640         {
 641                 free(p->excludes[i]);
 642         }
 643         free(p->excludes);
 644         free(p);
 645         return 0;
 646 }
 647
 648 int git_check_excluded_1(const char *pathname,
 649                                                         int pathlen, const char *basename, int *dtype,
 650                                                         EXCLUDE_LIST el)
 651 {
 652         return excluded_from_list(pathname, pathlen, basename,dtype,el);
 653 }
 654
 655 int git_get_notes(GIT_HASH hash, char **p_note)
 656 {
 657         struct strbuf sb;
 658         size_t size;
 659         strbuf_init(&sb,0);
 660         format_display_notes(hash, &sb, "utf-8", 0);
 661         *p_note = strbuf_detach(&sb,&size);
 662
 663         return 0;
 664 }
 665
 666 struct cmd_struct {
 667         const char *cmd;
 668         int (*fn)(int, const char **, const char *);
 669         int option;
 670 };
 671
 672 #define RUN_SETUP       (1<<0)
 673 #define USE_PAGER       (1<<1)
 674 /*
 675  * require working tree to be present -- anything uses this needs
 676  * RUN_SETUP for reading from the configuration file.
 677  */
 678 #define NEED_WORK_TREE  (1<<2)
 679
 680 const char git_usage_string[] =
 681         "git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]\n"
 682         "           [-p|--paginate|--no-pager] [--no-replace-objects]\n"
 683         "           [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]\n"
 684         "           [-c name=value] [--help]\n"
 685         "           COMMAND [ARGS]";
 686
 687 const char git_more_info_string[] =
 688         "See 'git help COMMAND' for more information on a specific command.";
 689
 690 /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
 691 int check_pager_config(const char *cmd)
 692 {
 693         return 0;
 694 }
 695
 696
 697 int git_run_cmd(char *cmd, char *arg)
 698 {
 699
 700         int i=0;
 701         char ** argv=0;
 702         int argc=0;
 703
 704 static struct cmd_struct commands[] = {
 705                 { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
 706                 { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
 707                 { "annotate", cmd_annotate, RUN_SETUP },
 708                 { "apply", cmd_apply },
 709                 { "archive", cmd_archive },
 710                 { "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE },
 711                 { "blame", cmd_blame, RUN_SETUP },
 712                 { "branch", cmd_branch, RUN_SETUP },
 713                 { "bundle", cmd_bundle },
 714                 { "cat-file", cmd_cat_file, RUN_SETUP },
 715                 { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
 716                 { "checkout-index", cmd_checkout_index,
 717                         RUN_SETUP | NEED_WORK_TREE},
 718                 { "check-ref-format", cmd_check_ref_format },
 719                 { "check-attr", cmd_check_attr, RUN_SETUP },
 720                 { "cherry", cmd_cherry, RUN_SETUP },
 721                 { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
 722                 { "clone", cmd_clone },
 723                 { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
 724                 { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
 725                 { "commit-tree", cmd_commit_tree, RUN_SETUP },
 726                 { "config", cmd_config },
 727                 { "count-objects", cmd_count_objects, RUN_SETUP },
 728                 { "describe", cmd_describe, RUN_SETUP },
 729                 { "diff", cmd_diff },
 730                 { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE },
 731                 { "diff-index", cmd_diff_index, RUN_SETUP },
 732                 { "diff-tree", cmd_diff_tree, RUN_SETUP },
 733                 { "fast-export", cmd_fast_export, RUN_SETUP },
 734                 { "fetch", cmd_fetch, RUN_SETUP },
 735                 { "fetch-pack", cmd_fetch_pack, RUN_SETUP },
 736                 { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
 737                 { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
 738                 { "format-patch", cmd_format_patch, RUN_SETUP },
 739                 { "fsck", cmd_fsck, RUN_SETUP },
 740                 { "fsck-objects", cmd_fsck, RUN_SETUP },
 741                 { "gc", cmd_gc, RUN_SETUP },
 742                 { "get-tar-commit-id", cmd_get_tar_commit_id },
 743                 { "grep", cmd_grep },
 744                 { "hash-object", cmd_hash_object },
 745                 { "help", cmd_help },
 746                 { "index-pack", cmd_index_pack },
 747                 { "init", cmd_init_db },
 748                 { "init-db", cmd_init_db },
 749                 { "log", cmd_log, RUN_SETUP },
 750                 { "ls-files", cmd_ls_files, RUN_SETUP },
 751                 { "ls-tree", cmd_ls_tree, RUN_SETUP },
 752                 { "ls-remote", cmd_ls_remote },
 753                 { "mailinfo", cmd_mailinfo },
 754                 { "mailsplit", cmd_mailsplit },
 755                 { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
 756                 { "merge-base", cmd_merge_base, RUN_SETUP },
 757                 { "merge-file", cmd_merge_file },
 758                 { "merge-index", cmd_merge_index, RUN_SETUP },
 759                 { "merge-ours", cmd_merge_ours, RUN_SETUP },
 760                 { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
 761                 { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
 762                 { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
 763                 { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
 764                 { "merge-tree", cmd_merge_tree, RUN_SETUP },
 765                 { "mktag", cmd_mktag, RUN_SETUP },
 766                 { "mktree", cmd_mktree, RUN_SETUP },
 767                 { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
 768                 { "name-rev", cmd_name_rev, RUN_SETUP },
 769                 { "notes", cmd_notes, RUN_SETUP },
 770                 { "pack-objects", cmd_pack_objects, RUN_SETUP },
 771                 { "pack-redundant", cmd_pack_redundant, RUN_SETUP },
 772                 { "patch-id", cmd_patch_id },
 773                 { "peek-remote", cmd_ls_remote },
 774                 { "pickaxe", cmd_blame, RUN_SETUP },
 775                 { "prune", cmd_prune, RUN_SETUP },
 776                 { "prune-packed", cmd_prune_packed, RUN_SETUP },
 777                 { "push", cmd_push, RUN_SETUP },
 778                 { "read-tree", cmd_read_tree, RUN_SETUP },
 779                 { "receive-pack", cmd_receive_pack },
 780                 { "reflog", cmd_reflog, RUN_SETUP },
 781                 { "remote", cmd_remote, RUN_SETUP },
 782                 { "replace", cmd_replace, RUN_SETUP },
 783                 { "repo-config", cmd_config },
 784                 { "rerere", cmd_rerere, RUN_SETUP },
 785                 { "reset", cmd_reset, RUN_SETUP },
 786                 { "rev-list", cmd_rev_list, RUN_SETUP },
 787                 { "rev-parse", cmd_rev_parse },
 788                 { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
 789                 { "rm", cmd_rm, RUN_SETUP },
 790                 { "send-pack", cmd_send_pack, RUN_SETUP },
 791                 { "shortlog", cmd_shortlog, USE_PAGER },
 792                 { "show-branch", cmd_show_branch, RUN_SETUP },
 793                 { "show", cmd_show, RUN_SETUP },
 794                 { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
 795                 { "stripspace", cmd_stripspace },
 796                 { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
 797                 { "tag", cmd_tag, RUN_SETUP },
 798                 { "tar-tree", cmd_tar_tree },
 799                 { "unpack-file", cmd_unpack_file, RUN_SETUP },
 800                 { "unpack-objects", cmd_unpack_objects, RUN_SETUP },
 801                 { "update-index", cmd_update_index, RUN_SETUP },
 802                 { "update-ref", cmd_update_ref, RUN_SETUP },
 803                 { "update-server-info", cmd_update_server_info, RUN_SETUP },
 804                 { "upload-archive", cmd_upload_archive },
 805                 { "var", cmd_var },
 806                 { "verify-tag", cmd_verify_tag, RUN_SETUP },
 807                 { "version", cmd_version },
 808                 { "whatchanged", cmd_whatchanged, RUN_SETUP },
 809                 { "write-tree", cmd_write_tree, RUN_SETUP },
 810                 { "verify-pack", cmd_verify_pack },
 811                 { "show-ref", cmd_show_ref, RUN_SETUP },
 812                 { "pack-refs", cmd_pack_refs, RUN_SETUP },
 813         };
 814
 815         git_init();
 816
 817         for(i=0;i<      sizeof(commands) / sizeof(struct cmd_struct);i++)
 818         {
 819                 if(strcmp(cmd,commands[i].cmd)==0)
 820                 {
 821                         int ret;
 822                         if(arg != NULL)
 823                                 argv = strtoargv(arg,&argc);
 824
 825                         ret = commands[i].fn(argc, argv, NULL);
 826
 827                         if(argv)
 828                                 free(argv);
 829
 830                         return ret;
 831
 832
 833                 }
 834         }
 835         return -1;
 836 }
 837
 838 int git_for_each_ref_in(const char * refname, each_ref_fn fn, void * data)
 839 {
 840         invalidate_cached_refs();
 841         return for_each_ref_in(refname, fn, data);
 842 }
 843
 844 const char *git_resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag)
 845 {
 846         invalidate_cached_refs();
 847         return resolve_ref(ref,sha1,reading, flag);
 848 }
 849 int git_for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data)
 850 {
 851         return for_each_reflog_ent(ref,fn,cb_data);
 852 }
 853
 854 int git_deref_tag(unsigned char *tagsha1, GIT_HASH refhash)
 855 {
 856         struct object *obj = NULL;
 857         obj = parse_object(tagsha1);
 858         if (!obj)
 859                 return -1;
 860
 861         if (obj->type == OBJ_TAG)
 862         {
 863                         obj = deref_tag(obj, "", 0);
 864                         if (!obj)
 865                                 return -1;
 866
 867                         memcpy(refhash, obj->sha1, sizeof(GIT_HASH));
 868                         return 0;
 869         }
 870
 871         return -1;
 872 }
 873
 874 static int update_some(const unsigned char *sha1, const char *base, int baselen,
 875                 const char *pathname, unsigned mode, int stage, void *context)
 876 {
 877         struct cache_entry *ce;
 878
 879         ce = (struct cache_entry *)context;
 880
 881         if (S_ISDIR(mode))
 882                 return READ_TREE_RECURSIVE;
 883
 884         hashcpy(ce->sha1, sha1);
 885         memcpy(ce->name, base, baselen);
 886         memcpy(ce->name + baselen, pathname, strlen(pathname));
 887         ce->ce_flags = create_ce_flags(strlen(pathname)+baselen, 0);
 888         ce->ce_mode = create_ce_mode(mode);
 889
 890         return 0;
 891 }
 892
 893 int git_checkout_file(const char *ref, const char *path, const char *outputpath)
 894 {
 895         struct cache_entry *ce;
 896         int ret;
 897         GIT_HASH sha1;
 898         struct tree * root;
 899         struct checkout state;
 900         char *match[2];
 901         ret = get_sha1(ref, sha1);
 902         if(ret)
 903                 return ret;
 904
 905         reprepare_packed_git();
 906         root = parse_tree_indirect(sha1);
 907
 908         if(!root)
 909                 return -1;
 910
 911         ce = xcalloc(1, cache_entry_size(strlen(path)));
 912
 913         match[0] = path;
 914         match[1] = NULL;
 915         ret = read_tree_recursive(root,"",0,0,match,update_some,ce);
 916
 917         if(ret)
 918         {
 919                 free(ce);
 920                 return ret;
 921         }
 922         memset(&state, 0, sizeof(state));
 923         state.force = 1;
 924         state.refresh_cache = 0;
 925
 926         ret = write_entry(ce, outputpath, &state, 0);
 927         free(ce);
 928         return ret;
 929 }
 930 struct config_buf
 931 {
 932         char *buf;
 933         char *key;
 934         char *size;
 935         int seen;
 936 };
 937
 938 static int get_config(const char *key_, const char *value_, void *cb)
 939 {
 940         struct config_buf *buf;
 941         buf=(struct config_buf*)cb;
 942         if(strcmp(key_, buf->key))
 943                 return 0;
 944
 945         strncpy(buf->buf,value_,buf->size);
 946         buf->seen = 1;
 947         return 0;
 948
 949 }
 950 int git_get_config(const char *key, char *buffer, int size, char *git_path)
 951 {
 952         char *local,*global,*system_wide,*p;
 953         struct config_buf buf;
 954         buf.buf=buffer;
 955         buf.size=size;
 956         buf.seen = 0;
 957         buf.key = key;
 958
 959         local=global=system_wide=NULL;
 960
 961         //local = config_exclusive_filename;
 962         if (!local) {
 963                 const char *home = getenv("HOME");
 964                 if(!home)
 965                         home=getenv("USERPROFILE");
 966
 967                 local=p= git_pathdup("config");
 968                 if(git_path&&strlen(git_path))
 969                 {
 970                         local=xstrdup(mkpath("%s/%s", git_path, p));
 971                         free(p);
 972                 }
 973                 if (git_config_global() && home)
 974                         global = xstrdup(mkpath("%s/.gitconfig", home));
 975                 if (git_config_system())
 976                         system_wide = git_etc_gitconfig();
 977         }
 978
 979         if ( !buf.seen)
 980                 git_config_from_file(get_config, local, &buf);
 981         if (!buf.seen && global)
 982                 git_config_from_file(get_config, global, &buf);
 983         if (!buf.seen && system_wide)
 984                 git_config_from_file(get_config, system_wide, &buf);
 985
 986         if(local)
 987                 free(local);
 988         if(global)
 989                 free(global);
 990         //if(system_wide)
 991         //      free(system_wide);
 992
 993         return !buf.seen;
 994 }
 995
 996 int get_set_config(const char *key, char *value, CONFIG_TYPE type,char *git_path)
 997 {
 998         char *local,*global,*system_wide,*p;
 999         int ret;
1000         local=global=system_wide=NULL;
1001
1002         //local = config_exclusive_filename;
1003         if (!local) {
1004                 char *home = getenv("HOME");
1005
1006                 if(!home)
1007                         home=getenv("USERPROFILE");
1008
1009                 local=p= git_pathdup("config");
1010                 if(git_path&&strlen(git_path))
1011                 {
1012                         local=xstrdup(mkpath("%s/%s", git_path, p));
1013                         free(p);
1014                 }
1015                 if (git_config_global() && home)
1016                         global = xstrdup(mkpath("%s/.gitconfig", home));
1017                 if (git_config_system())
1018                         system_wide = git_etc_gitconfig();
1019         }
1020
1021         switch(type)
1022         {
1023         case CONFIG_LOCAL:
1024                 config_exclusive_filename  = local;
1025                 break;
1026         case CONFIG_GLOBAL:
1027                 config_exclusive_filename = global;
1028                 break;
1029         case CONFIG_SYSTEM:
1030                 config_exclusive_filename = system_wide;
1031                 break;
1032         default:
1033                 config_exclusive_filename = NULL;
1034                 break;
1035         }
1036
1037         if(!config_exclusive_filename)
1038                 return -1;
1039
1040         ret = git_config_set(key, value);
1041
1042         if(local)
1043                 free(local);
1044         if(global)
1045                 free(global);
1046         //if(system_wide)
1047         //      free(system_wide);
1048
1049         return ret;
1050 }