src/errors.c

   1 /*
   2  * Copyright (C) 2009-2011 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #include "common.h"
   8 #include "git2/thread-utils.h" /* for GIT_TLS */
   9 #include "thread-utils.h" /* for GIT_TLS */
  10
  11 #include <stdarg.h>
  12
  13 static GIT_TLS char g_last_error[1024];
  14
  15 static struct {
  16         int num;
  17         const char *str;
  18 } error_codes[] = {
  19         {GIT_ERROR, "Unspecified error"},
  20         {GIT_ENOTOID, "Input was not a properly formatted Git object id."},
  21         {GIT_ENOTFOUND, "Object does not exist in the scope searched."},
  22         {GIT_ENOMEM, "Not enough space available."},
  23         {GIT_EOSERR, "Consult the OS error information."},
  24         {GIT_EOBJTYPE, "The specified object is of invalid type"},
  25         {GIT_EOBJCORRUPTED, "The specified object has its data corrupted"},
  26         {GIT_ENOTAREPO, "The specified repository is invalid"},
  27         {GIT_EINVALIDTYPE, "The object or config variable type is invalid or doesn't match"},
  28         {GIT_EMISSINGOBJDATA, "The object cannot be written that because it's missing internal data"},
  29         {GIT_EPACKCORRUPTED, "The packfile for the ODB is corrupted"},
  30         {GIT_EFLOCKFAIL, "Failed to adquire or release a file lock"},
  31         {GIT_EZLIB, "The Z library failed to inflate/deflate an object's data"},
  32         {GIT_EBUSY, "The queried object is currently busy"},
  33         {GIT_EINVALIDPATH, "The path is invalid"},
  34         {GIT_EBAREINDEX, "The index file is not backed up by an existing repository"},
  35         {GIT_EINVALIDREFNAME, "The name of the reference is not valid"},
  36         {GIT_EREFCORRUPTED, "The specified reference has its data corrupted"},
  37         {GIT_ETOONESTEDSYMREF, "The specified symbolic reference is too deeply nested"},
  38         {GIT_EPACKEDREFSCORRUPTED, "The pack-refs file is either corrupted of its format is not currently supported"},
  39         {GIT_EINVALIDPATH, "The path is invalid" },
  40         {GIT_EREVWALKOVER, "The revision walker is empty; there are no more commits left to iterate"},
  41         {GIT_EINVALIDREFSTATE, "The state of the reference is not valid"},
  42         {GIT_ENOTIMPLEMENTED, "This feature has not been implemented yet"},
  43         {GIT_EEXISTS, "A reference with this name already exists"},
  44         {GIT_EOVERFLOW, "The given integer literal is too large to be parsed"},
  45         {GIT_ENOTNUM, "The given literal is not a valid number"},
  46         {GIT_EAMBIGUOUSOIDPREFIX, "The given oid prefix is ambiguous"},
  47 };
  48
  49 const char *git_strerror(int num)
  50 {
  51         size_t i;
  52
  53         if (num == GIT_EOSERR)
  54                 return strerror(errno);
  55         for (i = 0; i < ARRAY_SIZE(error_codes); i++)
  56                 if (num == error_codes[i].num)
  57                         return error_codes[i].str;
  58
  59         return "Unknown error";
  60 }
  61
  62 void git___rethrow(const char *msg, ...)
  63 {
  64         char new_error[1024];
  65         char *old_error = NULL;
  66
  67         va_list va;
  68
  69         va_start(va, msg);
  70         vsnprintf(new_error, sizeof(new_error), msg, va);
  71         va_end(va);
  72
  73         old_error = strdup(g_last_error);
  74         snprintf(g_last_error, sizeof(g_last_error), "%s \n     - %s", new_error, old_error);
  75         free(old_error);
  76 }
  77
  78 void git___throw(const char *msg, ...)
  79 {
  80         va_list va;
  81
  82         va_start(va, msg);
  83         vsnprintf(g_last_error, sizeof(g_last_error), msg, va);
  84         va_end(va);
  85 }
  86
  87 const char *git_lasterror(void)
  88 {
  89         if (!g_last_error[0])
  90                 return NULL;
  91
  92         return g_last_error;
  93 }
  94
  95 void git_clearerror(void)
  96 {
  97         g_last_error[0] = '\0';
  98 }