third_party/sqlite/icu-shell.patch

   1 History uses fts3 with an icu-based segmenter.  These changes allow
   2 building a sqlite3 binary which can read those files.
   3
   4 Index: src/shell.c
   5 ===================================================================
   6 --- src/shell.c 2009-09-04 13:37:43.000000000 -0700
   7 +++ src/shell.c 2009-09-15 11:32:08.000000000 -0700
   8 @@ -3007,6 +3007,14 @@
   9    int i;
  10    int rc = 0;
  11
  12 +  /* Begin evanm patch. */
  13 +  extern int sqlite_shell_init_icu();
  14 +  if( !sqlite_shell_init_icu() ){
  15 +    fprintf(stderr, "%s: warning: couldn't find icudt38.dll; "
  16 +                    "queries against ICU FTS tables will fail.\n", argv[0]);
  17 +  }
  18 +  /* End evanm patch. */
  19 +
  20    Argv0 = argv[0];
  21    main_init(&data);
  22    stdin_is_interactive = isatty(0);
  23 diff --git src/shell_icu_linux.c src/shell_icu_linux.c
  24 new file mode 100644
  25 index 0000000..4ad0e42
  26 --- /dev/null
  27 +++ src/shell_icu_linux.c
  28 @@ -0,0 +1,27 @@
  29 +/* Copyright 2007 Google Inc. All Rights Reserved.
  30 +**/
  31 +
  32 +#include <limits.h>
  33 +#include <unistd.h>
  34 +#include "unicode/putil.h"
  35 +#include "unicode/udata.h"
  36 +
  37 +/*
  38 +** This function attempts to load the ICU data tables from a data file.
  39 +** Returns 0 on failure, nonzero on success.
  40 +** This a hack job of icu_utils.cc:Initialize().  It's Chrome-specific code.
  41 +*/
  42 +int sqlite_shell_init_icu() {
  43 +  char bin_dir[PATH_MAX + 1];
  44 +  int bin_dir_size = readlink("/proc/self/exe", bin_dir, PATH_MAX);
  45 +  if (bin_dir_size < 0 || bin_dir_size > PATH_MAX)
  46 +    return 0;
  47 +  bin_dir[bin_dir_size] = 0;;
  48 +
  49 +  u_setDataDirectory(bin_dir);
  50 +  // Only look for the packaged data file;
  51 +  // the default behavior is to look for individual files.
  52 +  UErrorCode err = U_ZERO_ERROR;
  53 +  udata_setFileAccess(UDATA_ONLY_PACKAGES, &err);
  54 +  return err == U_ZERO_ERROR;
  55 +}
  56 Index: src/shell_icu_win.c
  57 ===================================================================
  58 --- src/shell_icu_win.c 1969-12-31 16:00:00.000000000 -0800
  59 +++ src/shell_icu_win.c 2011-03-03 14:29:11.000000000 -0700
  60 @@ -0,0 +1,32 @@
  61 +/* Copyright 2011 Google Inc. All Rights Reserved.
  62 +**/
  63 +
  64 +#include <windows.h>
  65 +#include "unicode/udata.h"
  66 +
  67 +/*
  68 +** This function attempts to load the ICU data tables from a DLL.
  69 +** Returns 0 on failure, nonzero on success.
  70 +** This a hack job of icu_utils.cc:Initialize().  It's Chrome-specific code.
  71 +*/
  72 +
  73 +#define ICU_DATA_SYMBOL "icudt" U_ICU_VERSION_SHORT "_dat"
  74 +int sqlite_shell_init_icu() {
  75 +  HMODULE module;
  76 +  FARPROC addr;
  77 +  UErrorCode err;
  78 +
  79 +  // Chrome dropped U_ICU_VERSION_SHORT from the icu data dll name.
  80 +  module = LoadLibrary(L"icudt.dll");
  81 +  if (!module)
  82 +    return 0;
  83 +
  84 +  addr = GetProcAddress(module, ICU_DATA_SYMBOL);
  85 +  if (!addr)
  86 +    return 0;
  87 +
  88 +  err = U_ZERO_ERROR;
  89 +  udata_setCommonData(addr, &err);
  90 +
  91 +  return 1;
  92 +}