| // This file is included in both the libgcobol and gcc/cobol compilations |
| /* |
| * Copyright (c) 2021-2025 Symas Corporation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of the Symas Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <iconv.h> |
| |
| #include <cctype> |
| #include <clocale> |
| #include <cstdio> |
| #include <cstring> |
| #include <ctime> |
| |
| #include <algorithm> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "ec.h" |
| #include "common-defs.h" |
| #include "io.h" |
| #include "gcobolio.h" |
| #include "charmaps.h" |
| #include "valconv.h" |
| |
| // First: single-byte-coded (SBC) character sets: |
| |
| // 7-bit ASCII is a subset of the various ISO/IEC 8859 code pages. |
| // 8859 is a subset of code page 1252. |
| // CP1252 is informally, and improperly, known as the "ANSI" code set. In |
| // modern usage, when somebody says "8859-1", they almost invariably are |
| // referring to a CP1252 code set. |
| |
| // EBCDIC is also an SBC character set. IBM's original "international EBCDIC" |
| // code set was Code Page 37, which did not have a Euro sign. Code Page 1140 |
| // is the same as CP37, but with the Euro sign replacing the "universal |
| // currency symbol" at position 0x9F. The table below maps the 256 values of |
| // CodePage 1140 to the 256 values of CodePage 1252 in a way that allows for |
| // "round trip" conversion without any loss. |
| |
| // See https://en.wikipedia.org/w/index.php?title=Code_page_37&oldid=1082467670, |
| |
| // The modern world increasingly uses UTF-8, which is in conflict with ordinary |
| // COBOL's inherently single-byte nature. In UTF-8, the encoding for a Euro |
| // sign is three bytes (U+20AC encodes to E2 A2 AC). In single-byte CP1252, the |
| // Euro is encoded as 0x80. |
| |
| // So, we are going to assume that internally, the generated COBOL executable |
| // operates in code page 1252 or [hopefully some day] code page 1140. |
| |
| // We will convert output, as in DISPLAY <something> from the internal character |
| // set to the running machine's locale (for now, that locale will be assumed to |
| // be 1252/8859 if it isn't UTF-8). |
| |
| // And we will take some pains to figure out if the source code file was done |
| // as UTF-8; if not, we will assume 1252/8859-1 |
| |
| // __gg__ebcdic_codeset_in_use is the ultimate determinator of whether the |
| // internal codeset is ASCII/CP1252 or EBCDIC/CP1140. |
| bool __gg__ebcdic_codeset_in_use = false ; |
| |
| static text_codeset_t source_codeset = cs_cp1252_e; |
| static text_codeset_t console_codeset = cs_default_e; |
| |
| #define UNICODE_REPLACEMENT 0xFFFD // This a white question mark in a black diamond |
| #define ASCII_REPLACEMENT 0x87 // In CP1252, 0x87 is a double-dagger |
| |
| // This table is the default one-to-one mapping that's used, for example, when |
| // starting with ASCII and doing ASCII comparisons: |
| |
| const unsigned short |
| __gg__one_to_one_values[256] = |
| { |
| 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F, |
| 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F, |
| 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F, |
| 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F, |
| 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F, |
| 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F, |
| 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F, |
| 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F, |
| 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, |
| 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, |
| 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, |
| 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, |
| 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, |
| 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, |
| 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, |
| 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF |
| }; |
| |
| // This table can be used for converting EBCDIC values to CP1252. |
| |
| // There is an unfortunate caveat, one that undoubtedly will have unintended |
| // consequences. But COBOL has has the concept of a HIGH-VALUE, a character |
| // that theoretically tests alphanumercially greater than all other characters. |
| // In the CP1252 code page, the default HIGH-VALUE (it can be changed by the |
| // ALPHABET clause is 0xFF, which is displayed as the character 'ÿ'). In the |
| // EBCDIC code page 1140, that character is an EO control code. |
| |
| // So. In order that the default HIGH-VALUE once and always is 0xFF, these |
| // two tables have been modified slightly so that 0xFF always maps to 0xFF |
| |
| // Programmers who use the ALPHABET clause to change the HIGH-VALUE are on their |
| // own. |
| |
| |
| const unsigned short |
| __gg__cp1140_to_cp1252_values[256] = |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x9C, 0x09, 0x86, 0x7F, 0x97, 0x8D, 0x8E, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
| 0x10, 0x11, 0x12, 0x13, 0x9D, 0x85, 0x08, 0x87, 0x18, 0x19, 0x92, 0x8F, 0x1C, 0x1D, 0x1E, 0x1F, |
| 0xA4, 0x81, 0x82, 0x83, 0x84, 0x0A, 0x17, 0x1B, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x05, 0x06, 0x07, |
| 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04, 0x98, 0x99, 0x9A, 0x9B, 0x14, 0x15, 0x9E, 0x1A, |
| 0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5, 0xE7, 0xF1, 0xA2, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, |
| 0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF, 0xEC, 0xDF, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAC, |
| 0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5, 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, |
| 0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF, 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, |
| 0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1, |
| 0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0x80, |
| 0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0xDD, 0xDE, 0xAE, |
| 0x5E, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC, 0xBD, 0xBE, 0x5B, 0x5D, 0xAF, 0xA8, 0xB4, 0xD7, |
| 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5, |
| 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xFF, |
| 0x5C, 0xF7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, /*0x9F*/ 0xFF, |
| }; |
| |
| // This table is the mirror image of cp1140_to_cp1252_values, except for the |
| // above-mentioned 0xFF |
| const unsigned short |
| __gg__cp1252_to_cp1140_values[256] = |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F, 0x16, 0x05, 0x25, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
| 0x10, 0x11, 0x12, 0x13, 0x3C, 0x3D, 0x32, 0x26, 0x18, 0x19, 0x3F, 0x27, 0x1C, 0x1D, 0x1E, 0x1F, |
| 0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D, 0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61, |
| 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F, |
| 0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, |
| 0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xBA, 0xE0, 0xBB, 0xB0, 0x6D, |
| 0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07, |
| 0x9F, 0x21, 0x22, 0x23, 0x24, 0x15, 0x06, 0x17, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x09, 0x0A, 0x1B, |
| 0x30, 0x31, 0x1A, 0x33, 0x34, 0x35, 0x36, 0x08, 0x38, 0x39, 0x3A, 0x3B, 0x04, 0x14, 0x3E, 0xFF, |
| 0x41, 0xAA, 0x4A, 0xB1, 0x20, 0xB2, 0x6A, 0xB5, 0xBD, 0xB4, 0x9A, 0x8A, 0x5F, 0xCA, 0xAF, 0xBC, |
| 0x90, 0x8F, 0xEA, 0xFA, 0xBE, 0xA0, 0xB6, 0xB3, 0x9D, 0xDA, 0x9B, 0x8B, 0xB7, 0xB8, 0xB9, 0xAB, |
| 0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9E, 0x68, 0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77, |
| 0xAC, 0x69, 0xED, 0xEE, 0xEB, 0xEF, 0xEC, 0xBF, 0x80, 0xFD, 0xFE, 0xFB, 0xFC, 0xAD, 0xAE, 0x59, |
| 0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9C, 0x48, 0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57, |
| 0x8C, 0x49, 0xCD, 0xCE, 0xCB, 0xCF, 0xCC, 0xE1, 0x70, 0xDD, 0xDE, 0xDB, 0xDC, 0x8D, 0x8E, /*0xDF*/ 0xFF, |
| }; |
| |
| // This is the EBCDIC collating sequence when the internal character set is CP1252. It's actually |
| // a copy of __gg__cp1252_to_cp1140_values, but modified so that 0xFF maps to 0xFF. |
| // Doing this meant swapping the CP1252 upper-Y-umlaut with lower-Y-umlaut. |
| const unsigned short |
| __gg__cp1252_to_ebcdic_collation[256] = |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f, 0x16, 0x05, 0x25, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26, 0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d, 0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61, |
| 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f, |
| 0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, |
| 0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xba, 0xe0, 0xbb, 0xb0, 0x6d, |
| 0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xc0, 0x4f, 0xd0, 0xa1, 0x07, |
| 0x9f, 0x21, 0x22, 0x23, 0x24, 0x15, 0x06, 0x17, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x09, 0x0a, 0x1b, |
| 0x30, 0x31, 0x1a, 0x33, 0x34, 0x35, 0x36, 0x08, 0x38, 0x39, 0x3a, 0x3b, 0x04, 0x14, 0x3e, 0xdf, |
| 0x41, 0xaa, 0x4a, 0xb1, 0x20, 0xb2, 0x6a, 0xb5, 0xbd, 0xb4, 0x9a, 0x8a, 0x5f, 0xca, 0xaf, 0xbc, |
| 0x90, 0x8f, 0xea, 0xfa, 0xbe, 0xa0, 0xb6, 0xb3, 0x9d, 0xda, 0x9b, 0x8b, 0xb7, 0xb8, 0xb9, 0xab, |
| 0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9e, 0x68, 0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77, |
| 0xac, 0x69, 0xed, 0xee, 0xeb, 0xef, 0xec, 0xbf, 0x80, 0xfd, 0xfe, 0xfb, 0xfc, 0xad, 0xae, 0x59, |
| 0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9c, 0x48, 0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57, |
| 0x8c, 0x49, 0xcd, 0xce, 0xcb, 0xcf, 0xcc, 0xe1, 0x70, 0xdd, 0xde, 0xdb, 0xdc, 0x8d, 0x8e, 0xff, |
| }; |
| |
| // When using the EBCDIC internal character set, but if told to use the ASCII collating sequence, |
| // this table can be used. It's based on the __gg__cp1140_to_cp1252_values, but with the two |
| // characters at locations DF and FF swapped so that the HIGH-VALUE 0xFF maps to 0xFF. |
| const unsigned short |
| __gg__ebcdic_to_cp1252_collation[256] = |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x9C, 0x09, 0x86, 0x7F, 0x97, 0x8D, 0x8E, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
| 0x10, 0x11, 0x12, 0x13, 0x9D, 0x85, 0x08, 0x87, 0x18, 0x19, 0x92, 0x8F, 0x1C, 0x1D, 0x1E, 0x1F, |
| 0xA4, 0x81, 0x82, 0x83, 0x84, 0x0A, 0x17, 0x1B, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x05, 0x06, 0x07, |
| 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04, 0x98, 0x99, 0x9A, 0x9B, 0x14, 0x15, 0x9E, 0x1A, |
| 0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5, 0xE7, 0xF1, 0xA2, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, |
| 0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF, 0xEC, 0xDF, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAC, |
| 0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5, 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, |
| 0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF, 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, |
| 0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1, |
| 0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0x80, |
| 0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0xDD, 0xDE, 0xAE, |
| 0x5E, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC, 0xBD, 0xBE, 0x5B, 0x5D, 0xAF, 0xA8, 0xB4, 0xD7, |
| 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5, |
| 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xDF, |
| 0x5C, 0xF7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, 0xFF, |
| }; |
| |
| // This table is used for converting code page 1252 to the subset of UTF-8 that |
| // that contains CP1252 |
| |
| static const unsigned short |
| cp1252_to_utf8_values[256] = |
| { |
| 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, // 00 |
| 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, // 10 |
| 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, // 20 |
| 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, // 30 |
| 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, // 40 |
| 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, // 50 |
| 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, // 60 |
| 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f, // 70 |
| 0x20ac, 0x0081, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021, 0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x008d, 0x017d, 0x008f, // 80 |
| 0x0090, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014, 0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0x009d, 0x017e, 0x0178, // 90 |
| 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, // A0 |
| 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, // B0 |
| 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, // C0 |
| 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df, // D0 |
| 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, // E0 |
| 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff, // F0 |
| }; |
| |
| // This map table does the reverse UTF-8 conversion back to cp1252 |
| static const std::unordered_map<unsigned short, unsigned char>utf8_to_cp1252_values = |
| { |
| {0x0000, 0x00}, {0x0001, 0x01}, {0x0002, 0x02}, {0x0003, 0x03}, {0x0004, 0x04}, {0x0005, 0x05}, {0x0006, 0x06}, {0x0007, 0x07}, |
| {0x0008, 0x08}, {0x0009, 0x09}, {0x000a, 0x0a}, {0x000b, 0x0b}, {0x000c, 0x0c}, {0x000d, 0x0d}, {0x000e, 0x0e}, {0x000f, 0x0f}, |
| {0x0010, 0x10}, {0x0011, 0x11}, {0x0012, 0x12}, {0x0013, 0x13}, {0x0014, 0x14}, {0x0015, 0x15}, {0x0016, 0x16}, {0x0017, 0x17}, |
| {0x0018, 0x18}, {0x0019, 0x19}, {0x001a, 0x1a}, {0x001b, 0x1b}, {0x001c, 0x1c}, {0x001d, 0x1d}, {0x001e, 0x1e}, {0x001f, 0x1f}, |
| {0x0020, 0x20}, {0x0021, 0x21}, {0x0022, 0x22}, {0x0023, 0x23}, {0x0024, 0x24}, {0x0025, 0x25}, {0x0026, 0x26}, {0x0027, 0x27}, |
| {0x0028, 0x28}, {0x0029, 0x29}, {0x002a, 0x2a}, {0x002b, 0x2b}, {0x002c, 0x2c}, {0x002d, 0x2d}, {0x002e, 0x2e}, {0x002f, 0x2f}, |
| {0x0030, 0x30}, {0x0031, 0x31}, {0x0032, 0x32}, {0x0033, 0x33}, {0x0034, 0x34}, {0x0035, 0x35}, {0x0036, 0x36}, {0x0037, 0x37}, |
| {0x0038, 0x38}, {0x0039, 0x39}, {0x003a, 0x3a}, {0x003b, 0x3b}, {0x003c, 0x3c}, {0x003d, 0x3d}, {0x003e, 0x3e}, {0x003f, 0x3f}, |
| {0x0040, 0x40}, {0x0041, 0x41}, {0x0042, 0x42}, {0x0043, 0x43}, {0x0044, 0x44}, {0x0045, 0x45}, {0x0046, 0x46}, {0x0047, 0x47}, |
| {0x0048, 0x48}, {0x0049, 0x49}, {0x004a, 0x4a}, {0x004b, 0x4b}, {0x004c, 0x4c}, {0x004d, 0x4d}, {0x004e, 0x4e}, {0x004f, 0x4f}, |
| {0x0050, 0x50}, {0x0051, 0x51}, {0x0052, 0x52}, {0x0053, 0x53}, {0x0054, 0x54}, {0x0055, 0x55}, {0x0056, 0x56}, {0x0057, 0x57}, |
| {0x0058, 0x58}, {0x0059, 0x59}, {0x005a, 0x5a}, {0x005b, 0x5b}, {0x005c, 0x5c}, {0x005d, 0x5d}, {0x005e, 0x5e}, {0x005f, 0x5f}, |
| {0x0060, 0x60}, {0x0061, 0x61}, {0x0062, 0x62}, {0x0063, 0x63}, {0x0064, 0x64}, {0x0065, 0x65}, {0x0066, 0x66}, {0x0067, 0x67}, |
| {0x0068, 0x68}, {0x0069, 0x69}, {0x006a, 0x6a}, {0x006b, 0x6b}, {0x006c, 0x6c}, {0x006d, 0x6d}, {0x006e, 0x6e}, {0x006f, 0x6f}, |
| {0x0070, 0x70}, {0x0071, 0x71}, {0x0072, 0x72}, {0x0073, 0x73}, {0x0074, 0x74}, {0x0075, 0x75}, {0x0076, 0x76}, {0x0077, 0x77}, |
| {0x0078, 0x78}, {0x0079, 0x79}, {0x007a, 0x7a}, {0x007b, 0x7b}, {0x007c, 0x7c}, {0x007d, 0x7d}, {0x007e, 0x7e}, {0x007f, 0x7f}, |
| {0x20ac, 0x80}, {0x0081, 0x81}, {0x201a, 0x82}, {0x0192, 0x83}, {0x201e, 0x84}, {0x2026, 0x85}, {0x2020, 0x86}, {0x2021, 0x87}, |
| {0x02c6, 0x88}, {0x2030, 0x89}, {0x0160, 0x8a}, {0x2039, 0x8b}, {0x0152, 0x8c}, {0x008d, 0x8d}, {0x017d, 0x8e}, {0x008f, 0x8f}, |
| {0x0090, 0x90}, {0x2018, 0x91}, {0x2019, 0x92}, {0x201c, 0x93}, {0x201d, 0x94}, {0x2022, 0x95}, {0x2013, 0x96}, {0x2014, 0x97}, |
| {0x02dc, 0x98}, {0x2122, 0x99}, {0x0161, 0x9a}, {0x203a, 0x9b}, {0x0153, 0x9c}, {0x009d, 0x9d}, {0x017e, 0x9e}, {0x0178, 0x9f}, |
| {0x00a0, 0xa0}, {0x00a1, 0xa1}, {0x00a2, 0xa2}, {0x00a3, 0xa3}, {0x00a4, 0xa4}, {0x00a5, 0xa5}, {0x00a6, 0xa6}, {0x00a7, 0xa7}, |
| {0x00a8, 0xa8}, {0x00a9, 0xa9}, {0x00aa, 0xaa}, {0x00ab, 0xab}, {0x00ac, 0xac}, {0x00ad, 0xad}, {0x00ae, 0xae}, {0x00af, 0xaf}, |
| {0x00b0, 0xb0}, {0x00b1, 0xb1}, {0x00b2, 0xb2}, {0x00b3, 0xb3}, {0x00b4, 0xb4}, {0x00b5, 0xb5}, {0x00b6, 0xb6}, {0x00b7, 0xb7}, |
| {0x00b8, 0xb8}, {0x00b9, 0xb9}, {0x00ba, 0xba}, {0x00bb, 0xbb}, {0x00bc, 0xbc}, {0x00bd, 0xbd}, {0x00be, 0xbe}, {0x00bf, 0xbf}, |
| {0x00c0, 0xc0}, {0x00c1, 0xc1}, {0x00c2, 0xc2}, {0x00c3, 0xc3}, {0x00c4, 0xc4}, {0x00c5, 0xc5}, {0x00c6, 0xc6}, {0x00c7, 0xc7}, |
| {0x00c8, 0xc8}, {0x00c9, 0xc9}, {0x00ca, 0xca}, {0x00cb, 0xcb}, {0x00cc, 0xcc}, {0x00cd, 0xcd}, {0x00ce, 0xce}, {0x00cf, 0xcf}, |
| {0x00d0, 0xd0}, {0x00d1, 0xd1}, {0x00d2, 0xd2}, {0x00d3, 0xd3}, {0x00d4, 0xd4}, {0x00d5, 0xd5}, {0x00d6, 0xd6}, {0x00d7, 0xd7}, |
| {0x00d8, 0xd8}, {0x00d9, 0xd9}, {0x00da, 0xda}, {0x00db, 0xdb}, {0x00dc, 0xdc}, {0x00dd, 0xdd}, {0x00de, 0xde}, {0x00df, 0xdf}, |
| {0x00e0, 0xe0}, {0x00e1, 0xe1}, {0x00e2, 0xe2}, {0x00e3, 0xe3}, {0x00e4, 0xe4}, {0x00e5, 0xe5}, {0x00e6, 0xe6}, {0x00e7, 0xe7}, |
| {0x00e8, 0xe8}, {0x00e9, 0xe9}, {0x00ea, 0xea}, {0x00eb, 0xeb}, {0x00ec, 0xec}, {0x00ed, 0xed}, {0x00ee, 0xee}, {0x00ef, 0xef}, |
| {0x00f0, 0xf0}, {0x00f1, 0xf1}, {0x00f2, 0xf2}, {0x00f3, 0xf3}, {0x00f4, 0xf4}, {0x00f5, 0xf5}, {0x00f6, 0xf6}, {0x00f7, 0xf7}, |
| {0x00f8, 0xf8}, {0x00f9, 0xf9}, {0x00fa, 0xfa}, {0x00fb, 0xfb}, {0x00fc, 0xfc}, {0x00fd, 0xfd}, {0x00fe, 0xfe}, {0x00ff, 0xff}, |
| }; |
| |
| // This function extracts the next unicode code point from a stream of UTF-8 |
| // data. |
| |
| static bool |
| raw_is_SBC() |
| { |
| bool retval = false; |
| switch(source_codeset) |
| { |
| case cs_cp1252_e: |
| retval = true; |
| break; |
| default: |
| break; |
| } |
| return retval; |
| } |
| |
| |
| static size_t |
| extract_next_code_point(const unsigned char *utf8, |
| const size_t /*length_in_bytes*/, |
| size_t &position) |
| { |
| long retval = -1; // Means a badly formed code point |
| unsigned char ch = utf8[position++]; |
| long under_construction = 0; |
| int countdown = 0; |
| |
| if( (ch & 0x80) == 0x00 ) |
| { |
| // We are in the ASCII subset of UTF-8, and we are done |
| retval = ch; |
| goto done; |
| } |
| else if( (ch & 0xE0) == 0xC0 ) |
| { |
| // There is one byte to follow |
| countdown = 1; |
| under_construction = ch & 0x1F; |
| } |
| else if( (ch & 0xF0) == 0xE0 ) |
| { |
| countdown = 2; |
| under_construction = ch & 0x0F; |
| } |
| else if( (ch & 0xF8) == 0xF0 ) |
| { |
| countdown = 3; |
| under_construction = ch & 0x07; |
| } |
| else |
| { |
| // We have a poorly-constructed UTF-8 encoding |
| goto done; |
| } |
| while( countdown-- ) |
| { |
| ch = utf8[position++]; |
| // We are in a follow-up encoded byte: |
| if( (ch & 0xC0) == 0x80 ) |
| { |
| // The top two bits are 10, so build in the bottom six bits |
| under_construction <<= 6; |
| under_construction |= (ch & 0x3F); |
| } |
| else |
| { |
| // This is a poorly-formed encoding |
| goto done; |
| } |
| } |
| retval = under_construction; |
| |
| done: |
| return retval; |
| } |
| |
| void flipper(void) |
| { |
| for(int i=0; i<256; i++) |
| { |
| fprintf(stderr, "{0x%4.4x, 0x%2.2x}, ", cp1252_to_utf8_values[i], i); |
| if( (i % 8) == 7 ) |
| { |
| fprintf(stderr, "\n"); |
| } |
| } |
| } |
| |
| extern "C" |
| char __gg__ascii_to_ascii_chr(char ch) |
| { |
| return ch; |
| } |
| |
| extern "C" |
| char __gg__ascii_to_ebcdic_chr(char ch) |
| { |
| return (char)__gg__cp1252_to_cp1140_values[(ch&0xFF)]; |
| } |
| |
| extern "C" |
| char * |
| __gg__raw_to_ascii(char **dest, size_t *dest_size, const char *in, size_t length) |
| { |
| // We are anticipating `length` characters, some of which might be multi- |
| // character UTF-8 codepoints. We are sending back a nul-terminated string |
| // of SBC ASCII values. |
| |
| __gg__realloc_if_necessary(dest, dest_size, length+1); |
| |
| // This is the byte position of the output |
| size_t index = 0; |
| |
| // This is the byte position of the input |
| size_t position = 0; |
| |
| while( index < length ) |
| { |
| // In the case of "display "âêîôû", when the source code is encoded in |
| // UTF-8, the field->data.capacity is showing up as 10, because that |
| // UTF-8 string is ten bytes long, and the parser is not counting |
| // characters. The data.initial field is indeed nul-terminated, so when we |
| // hit a nul, we bug out: |
| if( in[position] == '\0' ) |
| { |
| // We have hit the end. We want to space-fill to the right: |
| while( index < length ) |
| { |
| (*dest)[index++] = internal_space; |
| } |
| break; |
| } |
| |
| // Special handling for PIC X VALUE HIGH-VALUE. If we just hand default |
| // 0xFF values to the rest of the routine, the utf-8 detection will give |
| // us a result that confuses the remainder of the processing. |
| if( (in[position]&0xFF) == 0xFF ) |
| { |
| (*dest)[index++] = in[position++]; |
| continue; |
| } |
| |
| if( raw_is_SBC() ) |
| { |
| (*dest)[index++] = in[position++]; |
| continue; |
| } |
| |
| size_t code_point; |
| // Pull the next code_point from the UTF-8 stream |
| long unicode_point = extract_next_code_point(reinterpret_cast<const unsigned char *>(in), |
| length, |
| position ); |
| |
| // Check for that unicode code point in the subset of characters we |
| // know about: |
| auto it = utf8_to_cp1252_values.find(unicode_point); |
| if( it == utf8_to_cp1252_values.end() ) |
| { |
| // That unicode character isn't in our list |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| code_point = it->second; |
| } |
| (*dest)[index++] = (char)code_point; |
| } |
| (*dest)[index++] = '\0'; |
| |
| return *dest; |
| } |
| |
| extern "C" |
| char * |
| __gg__raw_to_ebcdic(char **dest, size_t *dest_size, const char *in, size_t length) |
| { |
| // A UTF-8 string is at least as long as the single-byte-coded resulting |
| // string: |
| __gg__realloc_if_necessary(dest, dest_size, length+1); |
| |
| size_t index = 0; |
| |
| size_t position = 0; |
| size_t code_point; |
| while( index < length ) |
| { |
| // See comments in __gg__raw_to_ascii |
| if( in[position] == '\0' ) |
| { |
| // We have hit the end. We want to space-fill to the right: |
| while( index < length ) |
| { |
| (*dest)[index++] = internal_space; |
| } |
| break; |
| } |
| if( raw_is_SBC() ) |
| { |
| code_point = in[position++]; |
| long ebcdic_code_point = __gg__cp1252_to_cp1140_values[code_point&0xFF]; |
| (*dest)[index++] = ebcdic_code_point; |
| continue; |
| } |
| if( (in[position]&0xff) == 0xff ) |
| { |
| // HIGH-VALUE is a special case |
| (*dest)[index++] = in[position++]; |
| continue; |
| } |
| |
| // Pull the next code_point from the UTF-8 stream |
| long unicode_point = extract_next_code_point( reinterpret_cast<const unsigned char *>(in), |
| length, |
| position ); |
| // Check for that unicode code point in the subset of characters we |
| // know about: |
| auto it = utf8_to_cp1252_values.find(unicode_point); |
| if( it == utf8_to_cp1252_values.end() ) |
| { |
| // That unicode character isn't in our list |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| code_point = it->second; |
| } |
| // TODO: This could be sped up by creating a utf8_to_cp1140_values map. |
| // But sufficient unto the day are the evils thereof |
| long ebcdic_code_point = __gg__cp1252_to_cp1140_values[code_point&0xFF]; |
| (*dest)[index++] = ebcdic_code_point; |
| } |
| (*dest)[index++] = '\0'; |
| |
| return *dest; |
| } |
| |
| static |
| char * |
| convert_cp1252_to_utf8(char **dest, size_t *dest_size, const char *in, size_t length) |
| { |
| // Worst case is all unicode characters. |
| __gg__realloc_if_necessary(dest, dest_size, 4 * length + 1); |
| |
| size_t index = 0; |
| for(size_t i=0; i<length; i++) |
| { |
| unsigned char ch = *in++; |
| size_t unicode_point = cp1252_to_utf8_values[ch]; |
| if( unicode_point < 0x0080 ) |
| { |
| // Single-byte |
| (*dest)[index++] = (char)unicode_point; |
| } |
| else if(unicode_point < 0x0800) |
| { |
| // Two-byte: |
| (*dest)[index++] = 0xC0 + (unicode_point>>6); |
| (*dest)[index++] = 0x80 + ((unicode_point>>0) & 0x3F); |
| } |
| else if(unicode_point < 0x10000) |
| { |
| // Three-byte: |
| (*dest)[index++] = 0xE0 + (unicode_point>>12); |
| (*dest)[index++] = 0x80 + ((unicode_point>>6) & 0x3F); |
| (*dest)[index++] = 0x80 + ((unicode_point>>0) & 0x3F); |
| } |
| else |
| { |
| // Four-byte: |
| (*dest)[index++] = 0xF0 + (unicode_point>>18); |
| (*dest)[index++] = 0x80 + ((unicode_point>>12) & 0x3F); |
| (*dest)[index++] = 0x80 + ((unicode_point>>6) & 0x3F); |
| (*dest)[index++] = 0x80 + ((unicode_point>>0) & 0x3F); |
| } |
| } |
| (*dest)[index++] = '\0'; |
| |
| return *dest; |
| } |
| |
| // This is the address of the 256-character map for internal characters |
| // It'll be set to one-to-one for ASCII, and to cp1252-to-cp1140_values for |
| // EBCDIC. |
| unsigned short const *__gg__internal_codeset_map; |
| |
| // Here is the list of function pointers establish which ones of the paired |
| // possibilities of conversion routines are actually in use. |
| |
| char (*__gg__ascii_to_internal_chr)(char); |
| void (*__gg__ascii_to_internal_str)(char *str, size_t length); |
| char *(*__gg__raw_to_internal)(char **dest, size_t *dest_size, const char *in, const size_t length); |
| char *(*__gg__internal_to_console_cm)(char **dest, size_t *dest_size, const char *in, size_t length); |
| void (*__gg__console_to_internal_cm)(char * const str, size_t length); |
| void (*__gg__internal_to_ascii)(char *str, size_t length); |
| |
| extern "C" |
| void __gg__set_internal_codeset(int use_ebcdic) |
| { |
| __gg__ebcdic_codeset_in_use = !!use_ebcdic; |
| } |
| |
| extern "C" |
| void __gg__text_conversion_override(text_device_t device, |
| text_codeset_t codeset) |
| { |
| // Establish the default sourcecode and console codesets, and |
| // establish the codeset conversion routines: |
| |
| if( internal_is_ebcdic ) |
| { |
| // fprintf(stderr, "Setting up EBCDIC\n"); |
| __gg__internal_codeset_map = __gg__cp1252_to_cp1140_values; |
| __gg__ascii_to_internal_chr = &__gg__ascii_to_ebcdic_chr; |
| __gg__ascii_to_internal_str = &__gg__ascii_to_ebcdic; |
| __gg__raw_to_internal = &__gg__raw_to_ebcdic; |
| __gg__internal_to_console_cm = &__gg__ebcdic_to_console; |
| __gg__console_to_internal_cm = &__gg__console_to_ebcdic; |
| __gg__internal_to_ascii = &__gg__ebcdic_to_ascii; |
| } |
| else |
| { |
| // fprintf(stderr, "Setting up ASCII\n"); |
| __gg__internal_codeset_map = __gg__one_to_one_values; |
| __gg__ascii_to_internal_chr = &__gg__ascii_to_ascii_chr; |
| __gg__ascii_to_internal_str = &__gg__ascii_to_ascii; |
| __gg__raw_to_internal = &__gg__raw_to_ascii; |
| __gg__internal_to_console_cm = &__gg__ascii_to_console; |
| __gg__console_to_internal_cm = &__gg__console_to_ascii; |
| __gg__internal_to_ascii = &__gg__ascii_to_ascii; |
| } |
| |
| switch(device) |
| { |
| case td_default_e: |
| { |
| // We are setting our codesets to the defaults |
| |
| // First, sort out the console: |
| |
| // It is my understanding that the environment variable LANG is |
| // supposed to be set by the terminal to indicate the terminal's |
| // current character set. Let's use that as the winner, even if |
| // that's not quite the way locale(3) works. |
| const char *envLANG = getenv("LANG"); |
| if( !envLANG ) |
| { |
| // This is odd. No "LANG"? |
| envLANG = setlocale(LC_CTYPE, NULL); |
| } |
| if( !envLANG ) |
| { |
| // This is even more odd. Pick something as a backup to the backup |
| envLANG = "UTF-8"; |
| } |
| if( envLANG ) |
| { |
| if( strcasestr(envLANG, "UTF-8") ) |
| { |
| console_codeset = cs_utf8_e; |
| } |
| else |
| { |
| // If it isn't UTF-8, then figure on it being CP1252 as a |
| // convenient way of specifying an SBC codeset. |
| console_codeset = cs_cp1252_e; |
| } |
| } |
| break; |
| } |
| |
| case td_sourcecode_e: |
| // Explicitly set the source code codeset: |
| source_codeset = codeset; |
| break; |
| |
| case td_console_e: |
| // Explicitly set the console codeset: |
| console_codeset = codeset; |
| break; |
| } |
| } |
| |
| extern "C" |
| void |
| __gg__ascii_to_ascii(char *, size_t ) |
| { |
| return; |
| } |
| |
| extern "C" |
| void |
| __gg__ascii_to_ebcdic(char *str, size_t length) |
| { |
| for(size_t i=0; i<length; i++) |
| { |
| str[i] = __gg__cp1252_to_cp1140_values[str[i]&0xFF]; |
| } |
| } |
| |
| extern "C" |
| void |
| __gg__ebcdic_to_ascii(char * const str, size_t length) |
| { |
| for(size_t i=0; i<length; i++) |
| { |
| str[i] = __gg__cp1140_to_cp1252_values[str[i]&0xFF]; |
| } |
| } |
| |
| extern "C" |
| char *__gg__ascii_to_console( char **dest, |
| size_t *dest_size, |
| char const * const str, |
| const size_t length) |
| { |
| if( console_codeset == cs_utf8_e ) |
| { |
| __gg__realloc_if_necessary(dest, dest_size, length); |
| convert_cp1252_to_utf8(dest, dest_size, str, length); |
| } |
| else |
| { |
| __gg__realloc_if_necessary(dest, dest_size, length+1); |
| memcpy(*dest, str, length); |
| (*dest)[length] = '\0'; |
| } |
| return *dest; |
| } |
| |
| extern "C" |
| char *__gg__ebcdic_to_console(char **dest, |
| size_t *dest_size, |
| char const * const str, |
| const size_t length) |
| { |
| static size_t ebcdic_size = MINIMUM_ALLOCATION_SIZE; |
| static char *ebcdic = static_cast<char *>(malloc(ebcdic_size)); |
| if(!ebcdic)abort(); |
| __gg__realloc_if_necessary(&ebcdic, &ebcdic_size, length); |
| |
| memcpy(ebcdic, str, length); |
| __gg__ebcdic_to_ascii(ebcdic, length); |
| |
| if( console_codeset == cs_utf8_e ) |
| { |
| convert_cp1252_to_utf8(dest, dest_size, ebcdic, length); |
| } |
| else |
| { |
| __gg__realloc_if_necessary(dest, dest_size, length+1); |
| strcpy(*dest, ebcdic); |
| } |
| return *dest; |
| } |
| |
| extern "C" |
| void __gg__console_to_ascii(char * const str, size_t length) |
| { |
| // In-place conversion of ASCII data that might be UTF-8 to CP1252 |
| if( console_codeset == cs_cp1252_e ) |
| { |
| // It's already what we want it to be |
| return; |
| } |
| char *dest = str; |
| |
| size_t position = 0; |
| while( position < length ) |
| { |
| size_t code_point; |
| // Pull the next code_point from the UTF-8 stream |
| long unicode_point |
| = extract_next_code_point( reinterpret_cast<const unsigned char *>(str), |
| length, |
| position ); |
| if( unicode_point == -1 ) |
| { |
| // The UTF-8 stream was poorly formed. |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| // Check for that unicode code point in the subset of characters we |
| // know about: |
| auto it = utf8_to_cp1252_values.find(unicode_point); |
| if( it == utf8_to_cp1252_values.end() ) |
| { |
| // That unicode character isn't in our list |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| code_point = it->second; |
| } |
| } |
| *dest++ = (char)code_point; |
| } |
| *dest++ = '\0'; |
| } |
| |
| extern "C" |
| void |
| __gg__console_to_ebcdic(char * const str, size_t length) |
| { |
| char *dest = str; |
| |
| size_t position = 0; |
| while( position < length ) |
| { |
| size_t code_point; |
| // Pull the next code_point from the UTF-8 stream |
| long unicode_point |
| = extract_next_code_point( reinterpret_cast<const unsigned char *>(str), |
| length, |
| position ); |
| if( unicode_point == -1 ) |
| { |
| // The UTF-8 stream was poorly formed. |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| // Check for that unicode code point in the subset of characters we |
| // know about: |
| auto it = utf8_to_cp1252_values.find(unicode_point); |
| if( it == utf8_to_cp1252_values.end() ) |
| { |
| // That unicode character isn't in our list |
| code_point = ASCII_REPLACEMENT; |
| } |
| else |
| { |
| code_point = it->second; |
| } |
| } |
| *dest++ = __gg__cp1252_to_cp1140_values[code_point&0xFF] ; |
| } |
| *dest++ = '\0'; |
| } |
| |
| extern "C" |
| size_t |
| _to_ctype(char * const location, size_t length) |
| { |
| // Converts from our internal codeset to the system LC_TYPE codeset |
| const char *fromcode; |
| const char *tocode; |
| if( __gg__ebcdic_codeset_in_use ) |
| { |
| fromcode = "CP1140"; |
| } |
| else |
| { |
| fromcode = "CP1252"; |
| } |
| const char *ctype = setlocale(LC_CTYPE, ""); |
| |
| if( strcasestr(ctype, "UTF") ) |
| { |
| tocode = "UTF-8"; |
| } |
| else |
| { |
| tocode = "CP1252"; |
| } |
| |
| iconv_t cd = iconv_open(tocode, fromcode); |
| assert( cd != (iconv_t)-1 ); |
| |
| static char *dest = NULL; |
| static size_t dest_size = 0; |
| |
| // create a buffer long enough that iconv() won't fail: |
| __gg__realloc_if_necessary(&dest, &dest_size, 4*length+1); |
| |
| // Set up for the iconv() call: |
| char *inbuf = location; |
| size_t inbytesleft = length; |
| char *outbuf = dest; |
| size_t outbytesleft = 2*length+1; |
| |
| memset(dest, ' ', 2*length+1); |
| iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); |
| memcpy(location, dest, length); |
| return 0; |
| } |
| |
| extern "C" |
| size_t |
| _from_ctype(char * const location, size_t length) |
| { |
| // Converts from our internal codeset to the system LC_TYPE codeset |
| const char *fromcode; |
| const char *tocode; |
| if( __gg__ebcdic_codeset_in_use ) |
| { |
| tocode = "CP1140"; |
| } |
| else |
| { |
| tocode = "CP1252"; |
| } |
| const char *ctype = setlocale(LC_CTYPE, ""); |
| |
| if( strcasestr(ctype, "UTF") ) |
| { |
| fromcode = "UTF-8"; |
| } |
| else |
| { |
| fromcode = "CP1252"; |
| } |
| |
| iconv_t cd = iconv_open(tocode, fromcode); |
| assert( cd != (iconv_t)-1 ); |
| |
| static char *dest = NULL; |
| static size_t dest_size = 0; |
| |
| // create a buffer long enough that iconv() won't fail: |
| __gg__realloc_if_necessary(&dest, &dest_size, length+1); |
| |
| // Set up for the iconv() call: |
| char *inbuf = location; |
| size_t inbytesleft = length; |
| char *outbuf = dest; |
| size_t outbytesleft = length+1; |
| |
| memset(dest, internal_space, length+1); |
| ///size_t iret = |
| iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); |
| memcpy(location, dest, length); |
| return 0; |
| } |
