LCOV - code coverage report
Current view: top level - src/backend/utils/mb/conversion_procs/utf8_and_iso8859 - utf8_and_iso8859.c (source / functions) Hit Total Coverage
Test: PostgreSQL 15devel Lines: 25 27 92.6 %
Date: 2021-11-29 05:09:10 Functions: 5 5 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*-------------------------------------------------------------------------
       2             :  *
       3             :  *    ISO 8859 2-16 <--> UTF8
       4             :  *
       5             :  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
       6             :  * Portions Copyright (c) 1994, Regents of the University of California
       7             :  *
       8             :  * IDENTIFICATION
       9             :  *    src/backend/utils/mb/conversion_procs/utf8_and_iso8859/utf8_and_iso8859.c
      10             :  *
      11             :  *-------------------------------------------------------------------------
      12             :  */
      13             : 
      14             : #include "postgres.h"
      15             : #include "fmgr.h"
      16             : #include "mb/pg_wchar.h"
      17             : #include "../../Unicode/iso8859_10_to_utf8.map"
      18             : #include "../../Unicode/iso8859_13_to_utf8.map"
      19             : #include "../../Unicode/iso8859_14_to_utf8.map"
      20             : #include "../../Unicode/iso8859_15_to_utf8.map"
      21             : #include "../../Unicode/iso8859_2_to_utf8.map"
      22             : #include "../../Unicode/iso8859_3_to_utf8.map"
      23             : #include "../../Unicode/iso8859_4_to_utf8.map"
      24             : #include "../../Unicode/iso8859_5_to_utf8.map"
      25             : #include "../../Unicode/iso8859_6_to_utf8.map"
      26             : #include "../../Unicode/iso8859_7_to_utf8.map"
      27             : #include "../../Unicode/iso8859_8_to_utf8.map"
      28             : #include "../../Unicode/iso8859_9_to_utf8.map"
      29             : #include "../../Unicode/utf8_to_iso8859_10.map"
      30             : #include "../../Unicode/utf8_to_iso8859_13.map"
      31             : #include "../../Unicode/utf8_to_iso8859_14.map"
      32             : #include "../../Unicode/utf8_to_iso8859_15.map"
      33             : #include "../../Unicode/utf8_to_iso8859_16.map"
      34             : #include "../../Unicode/utf8_to_iso8859_2.map"
      35             : #include "../../Unicode/utf8_to_iso8859_3.map"
      36             : #include "../../Unicode/utf8_to_iso8859_4.map"
      37             : #include "../../Unicode/utf8_to_iso8859_5.map"
      38             : #include "../../Unicode/utf8_to_iso8859_6.map"
      39             : #include "../../Unicode/utf8_to_iso8859_7.map"
      40             : #include "../../Unicode/utf8_to_iso8859_8.map"
      41             : #include "../../Unicode/utf8_to_iso8859_9.map"
      42             : #include "../../Unicode/iso8859_16_to_utf8.map"
      43             : 
      44           8 : PG_MODULE_MAGIC;
      45             : 
      46           8 : PG_FUNCTION_INFO_V1(iso8859_to_utf8);
      47           8 : PG_FUNCTION_INFO_V1(utf8_to_iso8859);
      48             : 
      49             : /* ----------
      50             :  * conv_proc(
      51             :  *      INTEGER,    -- source encoding id
      52             :  *      INTEGER,    -- destination encoding id
      53             :  *      CSTRING,    -- source string (null terminated C string)
      54             :  *      CSTRING,    -- destination string (null terminated C string)
      55             :  *      INTEGER,    -- source string length
      56             :  *      BOOL        -- if true, don't throw an error if conversion fails
      57             :  * ) returns INTEGER;
      58             :  *
      59             :  * Returns the number of bytes successfully converted.
      60             :  * ----------
      61             :  */
      62             : 
      63             : typedef struct
      64             : {
      65             :     pg_enc      encoding;
      66             :     const pg_mb_radix_tree *map1;   /* to UTF8 map name */
      67             :     const pg_mb_radix_tree *map2;   /* from UTF8 map name */
      68             : } pg_conv_map;
      69             : 
      70             : static const pg_conv_map maps[] = {
      71             :     {PG_LATIN2, &iso8859_2_to_unicode_tree,
      72             :     &iso8859_2_from_unicode_tree},  /* ISO-8859-2 Latin 2 */
      73             :     {PG_LATIN3, &iso8859_3_to_unicode_tree,
      74             :     &iso8859_3_from_unicode_tree},  /* ISO-8859-3 Latin 3 */
      75             :     {PG_LATIN4, &iso8859_4_to_unicode_tree,
      76             :     &iso8859_4_from_unicode_tree},  /* ISO-8859-4 Latin 4 */
      77             :     {PG_LATIN5, &iso8859_9_to_unicode_tree,
      78             :     &iso8859_9_from_unicode_tree},  /* ISO-8859-9 Latin 5 */
      79             :     {PG_LATIN6, &iso8859_10_to_unicode_tree,
      80             :     &iso8859_10_from_unicode_tree}, /* ISO-8859-10 Latin 6 */
      81             :     {PG_LATIN7, &iso8859_13_to_unicode_tree,
      82             :     &iso8859_13_from_unicode_tree}, /* ISO-8859-13 Latin 7 */
      83             :     {PG_LATIN8, &iso8859_14_to_unicode_tree,
      84             :     &iso8859_14_from_unicode_tree}, /* ISO-8859-14 Latin 8 */
      85             :     {PG_LATIN9, &iso8859_15_to_unicode_tree,
      86             :     &iso8859_15_from_unicode_tree}, /* ISO-8859-15 Latin 9 */
      87             :     {PG_LATIN10, &iso8859_16_to_unicode_tree,
      88             :     &iso8859_16_from_unicode_tree}, /* ISO-8859-16 Latin 10 */
      89             :     {PG_ISO_8859_5, &iso8859_5_to_unicode_tree,
      90             :     &iso8859_5_from_unicode_tree},  /* ISO-8859-5 */
      91             :     {PG_ISO_8859_6, &iso8859_6_to_unicode_tree,
      92             :     &iso8859_6_from_unicode_tree},  /* ISO-8859-6 */
      93             :     {PG_ISO_8859_7, &iso8859_7_to_unicode_tree,
      94             :     &iso8859_7_from_unicode_tree},  /* ISO-8859-7 */
      95             :     {PG_ISO_8859_8, &iso8859_8_to_unicode_tree,
      96             :     &iso8859_8_from_unicode_tree},  /* ISO-8859-8 */
      97             : };
      98             : 
      99             : Datum
     100         148 : iso8859_to_utf8(PG_FUNCTION_ARGS)
     101             : {
     102         148 :     int         encoding = PG_GETARG_INT32(0);
     103         148 :     unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
     104         148 :     unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
     105         148 :     int         len = PG_GETARG_INT32(4);
     106         148 :     bool        noError = PG_GETARG_BOOL(5);
     107             :     int         i;
     108             : 
     109         148 :     CHECK_ENCODING_CONVERSION_ARGS(-1, PG_UTF8);
     110             : 
     111        1324 :     for (i = 0; i < lengthof(maps); i++)
     112             :     {
     113        1324 :         if (encoding == maps[i].encoding)
     114             :         {
     115             :             int         converted;
     116             : 
     117         148 :             converted = LocalToUtf(src, len, dest,
     118             :                                    maps[i].map1,
     119             :                                    NULL, 0,
     120             :                                    NULL,
     121             :                                    encoding,
     122             :                                    noError);
     123         112 :             PG_RETURN_INT32(converted);
     124             :         }
     125             :     }
     126             : 
     127           0 :     ereport(ERROR,
     128             :             (errcode(ERRCODE_INTERNAL_ERROR),
     129             :              errmsg("unexpected encoding ID %d for ISO 8859 character sets",
     130             :                     encoding)));
     131             : 
     132             :     PG_RETURN_INT32(0);
     133             : }
     134             : 
     135             : Datum
     136         628 : utf8_to_iso8859(PG_FUNCTION_ARGS)
     137             : {
     138         628 :     int         encoding = PG_GETARG_INT32(1);
     139         628 :     unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
     140         628 :     unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
     141         628 :     int         len = PG_GETARG_INT32(4);
     142         628 :     bool        noError = PG_GETARG_BOOL(5);
     143             :     int         i;
     144             : 
     145         628 :     CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, -1);
     146             : 
     147        1804 :     for (i = 0; i < lengthof(maps); i++)
     148             :     {
     149        1804 :         if (encoding == maps[i].encoding)
     150             :         {
     151             :             int         converted;
     152             : 
     153         628 :             converted = UtfToLocal(src, len, dest,
     154             :                                    maps[i].map2,
     155             :                                    NULL, 0,
     156             :                                    NULL,
     157             :                                    encoding,
     158             :                                    noError);
     159         364 :             PG_RETURN_INT32(converted);
     160             :         }
     161             :     }
     162             : 
     163           0 :     ereport(ERROR,
     164             :             (errcode(ERRCODE_INTERNAL_ERROR),
     165             :              errmsg("unexpected encoding ID %d for ISO 8859 character sets",
     166             :                     encoding)));
     167             : 
     168             :     PG_RETURN_INT32(0);
     169             : }

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