mirror of
https://github.com/ggml-org/llama.cpp.git
synced 2025-11-04 09:32:00 +00:00
92139b90af
* tests : add test-tokenizer-0.sh * unicode : add all unicode number ranges * starcoder : fix pre-tokenizer * tests : add test that fails with DeepSeek tokenizers * falcon : fix regex * unicode : regenerate unicode tables * refact : add tokenizer model * lint : fix * tests : disable failing tests ggml-ci * refact : add tests files ggml-ci * convert : print -> logging ggml-ci * lint : fix * unicode : digit -> number * phi-3 : update
687 lines
26 KiB
C++
687 lines
26 KiB
C++
#include "unicode.h"
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#include "unicode-data.h"
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <map>
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#include <regex>
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#include <stdexcept>
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#include <string>
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#include <unordered_map>
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#include <utility>
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#include <vector>
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#include <locale>
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#include <codecvt>
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static std::string unicode_cpts_to_utf8(const std::vector<uint32_t> & cps) {
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std::string result;
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for (size_t i = 0; i < cps.size(); ++i) {
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result.append(unicode_cpt_to_utf8(cps[i]));
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}
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return result;
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}
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static uint32_t unicode_cpt_from_utf8(const std::string & utf8, size_t & offset) {
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assert(offset < utf8.size());
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if (!(utf8[offset + 0] & 0x80)) {
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auto result = utf8[offset + 0];
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offset += 1;
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return result;
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}
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if (!(utf8[offset + 0] & 0x40)) {
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throw std::invalid_argument("invalid character");
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}
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if (!(utf8[offset + 0] & 0x20)) {
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if (offset + 1 >= utf8.size() || ! ((utf8[offset + 1] & 0xc0) == 0x80)) {
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throw std::invalid_argument("invalid character");
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}
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auto result = ((utf8[offset + 0] & 0x1f) << 6) | (utf8[offset + 1] & 0x3f);
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offset += 2;
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return result;
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}
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if (!(utf8[offset + 0] & 0x10)) {
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if (offset + 2 >= utf8.size() || ! ((utf8[offset + 1] & 0xc0) == 0x80) || ! ((utf8[offset + 2] & 0xc0) == 0x80)) {
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throw std::invalid_argument("invalid character");
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}
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auto result = ((utf8[offset + 0] & 0x0f) << 12) | ((utf8[offset + 1] & 0x3f) << 6) | (utf8[offset + 2] & 0x3f);
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offset += 3;
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return result;
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}
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if (!(utf8[offset + 0] & 0x08)) {
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if (offset + 3 >= utf8.size() || ! ((utf8[offset + 1] & 0xc0) == 0x80) || ! ((utf8[offset + 2] & 0xc0) == 0x80) || !((utf8[offset + 3] & 0xc0) == 0x80)) {
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throw std::invalid_argument("invalid character");
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}
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auto result = ((utf8[offset + 0] & 0x07) << 18) | ((utf8[offset + 1] & 0x3f) << 12) | ((utf8[offset + 2] & 0x3f) << 6) | (utf8[offset + 3] & 0x3f);
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offset += 4;
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return result;
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}
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throw std::invalid_argument("failed to convert utf8 to codepoint");
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}
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//static std::vector<uint16_t> unicode_cpt_to_utf16(uint32_t cp) {
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// std::vector<uint16_t> result;
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// if (/* 0x0000 <= cp && */ cp <= 0xffff) {
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// result.emplace_back(cp);
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// return result;
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// }
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// if (0x10000 <= cp && cp <= 0x10ffff) {
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// result.emplace_back(0xd800 | ((cp - 0x10000) >> 10));
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// result.emplace_back(0xdc00 | ((cp - 0x10000) & 0x03ff));
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// return result;
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// }
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// throw std::invalid_argument("failed to convert codepoint to utf16");
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//}
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//static std::vector<uint16_t> unicode_cpts_to_utf16(const std::vector<uint32_t> & cps) {
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// std::vector<uint16_t> result;
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// for (size_t i = 0; i < cps.size(); ++i) {
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// auto temp = unicode_cpt_to_utf16(cps[i]);
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// result.insert(result.end(), temp.begin(), temp.end());
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// }
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// return result;
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//}
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//static uint32_t unicode_cpt_from_utf16(const std::vector<uint16_t> & utf16, size_t & offset) {
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// assert(offset < utf16.size());
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// if (((utf16[0] >> 10) << 10) != 0xd800) {
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// auto result = utf16[offset + 0];
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// offset += 1;
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// return result;
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// }
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//
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// if (offset + 1 >= utf16.size() || !((utf16[1] & 0xdc00) == 0xdc00)) {
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// throw std::invalid_argument("invalid character");
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// }
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//
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// auto result = 0x10000 + (((utf16[0] & 0x03ff) << 10) | (utf16[1] & 0x03ff));
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// offset += 2;
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// return result;
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//}
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//static std::vector<uint32_t> unicode_cpts_from_utf16(const std::vector<uint16_t> & utf16) {
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// std::vector<uint32_t> result;
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// size_t offset = 0;
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// while (offset < utf16.size()) {
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// result.push_back(unicode_cpt_from_utf16(utf16, offset));
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// }
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// return result;
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//}
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static std::unordered_map<uint32_t, int> unicode_cpt_type_map() {
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std::unordered_map<uint32_t, int> cpt_types;
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for (auto p : unicode_ranges_number) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_NUMBER;
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}
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}
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for (auto p : unicode_ranges_letter) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_LETTER;
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}
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}
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for (auto p : unicode_ranges_whitespace) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_WHITESPACE;
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}
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}
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for (auto p : unicode_ranges_accent_mark) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_ACCENT_MARK;
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}
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}
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for (auto p : unicode_ranges_punctuation) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_PUNCTUATION;
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}
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}
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for (auto p : unicode_ranges_symbol) {
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for (auto i = p.first; i <= p.second; ++i) {
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cpt_types[i] = CODEPOINT_TYPE_SYMBOL;
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}
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}
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for (auto p : unicode_ranges_control) {
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for (auto i = p.first; i <= p.second; ++ i) {
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cpt_types[i] = CODEPOINT_TYPE_CONTROL;
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}
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}
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return cpt_types;
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}
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static std::unordered_map<uint8_t, std::string> unicode_byte_to_utf8_map() {
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std::unordered_map<uint8_t, std::string> map;
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for (int ch = u'!'; ch <= u'~'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[ch] = unicode_cpt_to_utf8(ch);
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}
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for (int ch = u'¡'; ch <= u'¬'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[ch] = unicode_cpt_to_utf8(ch);
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}
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for (int ch = u'®'; ch <= u'ÿ'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[ch] = unicode_cpt_to_utf8(ch);
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}
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auto n = 0;
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for (int ch = 0; ch < 256; ++ch) {
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if (map.find(ch) == map.end()) {
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map[ch] = unicode_cpt_to_utf8(256 + n);
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++n;
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}
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}
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return map;
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}
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static std::unordered_map<std::string, uint8_t> unicode_utf8_to_byte_map() {
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std::unordered_map<std::string, uint8_t> map;
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for (int ch = u'!'; ch <= u'~'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[unicode_cpt_to_utf8(ch)] = ch;
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}
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for (int ch = u'¡'; ch <= u'¬'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[unicode_cpt_to_utf8(ch)] = ch;
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}
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for (int ch = u'®'; ch <= u'ÿ'; ++ch) {
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assert(0 <= ch && ch < 256);
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map[unicode_cpt_to_utf8(ch)] = ch;
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}
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auto n = 0;
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for (int ch = 0; ch < 256; ++ch) {
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if (map.find(unicode_cpt_to_utf8(ch)) == map.end()) {
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map[unicode_cpt_to_utf8(256 + n)] = ch;
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++n;
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}
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}
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return map;
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}
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static inline std::wstring unicode_wstring_from_utf8(const std::string & s) {
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std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
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return conv.from_bytes(s);
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}
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static std::vector<std::string> unicode_byte_encoding_process(const std::vector<std::string> & bpe_words) {
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std::vector<std::string> bpe_encoded_words;
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for (const auto & word : bpe_words) {
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std::string text_utf;
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auto utf_word = unicode_cpts_from_utf8(word);
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for (size_t i = 0; i < utf_word.size(); ++i) {
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text_utf += unicode_cpt_to_utf8(utf_word[i]);
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}
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std::string encoded_token;
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for (char & c : text_utf) {
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encoded_token += unicode_byte_to_utf8(c);
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}
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bpe_encoded_words.emplace_back(encoded_token);
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}
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return bpe_encoded_words;
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}
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// GPT2 system regex: 's|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+
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static std::vector<size_t> unicode_regex_split_custom_gpt2(const std::string & text, const std::vector<size_t> & offsets) {
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std::vector<size_t> bpe_offsets; // store the offset of each word
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bpe_offsets.reserve(offsets.size()); // Reserve memory for the approximate size
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size_t start = 0;
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const auto cpts = unicode_cpts_from_utf8(text);
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for (auto offset : offsets) {
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std::string token;
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bool collecting_numeric = false;
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bool collecting_letter = false;
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bool collecting_special = false;
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bool collecting_whitespace_lookahead = false;
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bool collecting = false;
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std::vector<std::string> text_utf;
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text_utf.reserve(offset);
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for (size_t i = start; i < start + offset; ++i) {
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text_utf.emplace_back(unicode_cpt_to_utf8(cpts[i]));
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}
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for (int i = 0; i < (int)text_utf.size(); i++) {
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const std::string & utf_char = text_utf[i];
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bool split_condition = false;
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int bytes_remain = text_utf.size() - i;
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// forward backward lookups
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const std::string & utf_char_next = (i + 1 < (int)text_utf.size()) ? text_utf[i + 1] : "";
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const std::string & utf_char_next_next = (i + 2 < (int)text_utf.size()) ? text_utf[i + 2] : "";
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// handling contractions
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if (!split_condition && bytes_remain >= 2) {
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// 's|'t|'m|'d
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if (utf_char == "\'" && (utf_char_next == "s" || utf_char_next == "t" || utf_char_next == "m" || utf_char_next == "d")) {
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split_condition = true;
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}
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if (split_condition) {
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if (token.size()) {
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bpe_offsets.emplace_back(unicode_cpts_from_utf8(token).size());
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}
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token = utf_char + utf_char_next;
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bpe_offsets.emplace_back(unicode_cpts_from_utf8(token).size());
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token = "";
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i++;
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continue;
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}
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}
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if (!split_condition && bytes_remain >= 3) {
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// 're|'ve|'ll
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if (utf_char == "\'" && (
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(utf_char_next == "r" && utf_char_next_next == "e") ||
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(utf_char_next == "v" && utf_char_next_next == "e") ||
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(utf_char_next == "l" && utf_char_next_next == "l"))
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) {
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split_condition = true;
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}
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if (split_condition) {
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// current token + next token can be defined
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if (token.size()) {
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bpe_offsets.emplace_back(unicode_cpts_from_utf8(token).size());
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}
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token = utf_char;
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token += utf_char_next;
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token += utf_char_next_next;
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bpe_offsets.emplace_back(unicode_cpts_from_utf8(token).size());
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token = "";
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i += 2;
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continue;
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}
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}
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if (!split_condition && !collecting) {
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if (unicode_cpt_type(utf_char) == CODEPOINT_TYPE_LETTER || (token.empty() && utf_char == " " && unicode_cpt_type(utf_char_next) == CODEPOINT_TYPE_LETTER)) {
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collecting_letter = true;
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collecting = true;
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}
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else if (unicode_cpt_type(utf_char) == CODEPOINT_TYPE_NUMBER || (token.empty() && utf_char == " " && unicode_cpt_type(utf_char_next) == CODEPOINT_TYPE_NUMBER)) {
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collecting_numeric = true;
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collecting = true;
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}
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else if (
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((unicode_cpt_type(utf_char) != CODEPOINT_TYPE_LETTER && unicode_cpt_type(utf_char) != CODEPOINT_TYPE_NUMBER) && (unicode_cpt_type(utf_char) != CODEPOINT_TYPE_WHITESPACE)) ||
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(token.empty() && utf_char == " " && unicode_cpt_type(utf_char_next) != CODEPOINT_TYPE_LETTER && unicode_cpt_type(utf_char_next) != CODEPOINT_TYPE_NUMBER && unicode_cpt_type(utf_char_next) != CODEPOINT_TYPE_WHITESPACE)
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) {
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collecting_special = true;
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collecting = true;
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}
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else if (unicode_cpt_type(utf_char) == CODEPOINT_TYPE_WHITESPACE && unicode_cpt_type(utf_char_next) == CODEPOINT_TYPE_WHITESPACE) {
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collecting_whitespace_lookahead = true;
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collecting = true;
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}
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else if (unicode_cpt_type(utf_char) == CODEPOINT_TYPE_WHITESPACE) {
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split_condition = true;
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}
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}
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else if (!split_condition && collecting) {
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if (collecting_letter && unicode_cpt_type(utf_char) != CODEPOINT_TYPE_LETTER) {
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split_condition = true;
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}
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else if (collecting_numeric && unicode_cpt_type(utf_char) != CODEPOINT_TYPE_NUMBER) {
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split_condition = true;
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}
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else if (collecting_special && (unicode_cpt_type(utf_char) == CODEPOINT_TYPE_LETTER || unicode_cpt_type(utf_char) == CODEPOINT_TYPE_NUMBER || unicode_cpt_type(utf_char) == CODEPOINT_TYPE_WHITESPACE)) {
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split_condition = true;
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}
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else if (collecting_whitespace_lookahead && (unicode_cpt_type(utf_char_next) == CODEPOINT_TYPE_LETTER || unicode_cpt_type(utf_char_next) == CODEPOINT_TYPE_NUMBER)) {
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split_condition = true;
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}
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}
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if (utf_char_next == "") {
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split_condition = true; // final
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token += utf_char;
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}
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if (split_condition) {
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if (token.size()) {
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bpe_offsets.emplace_back(unicode_cpts_from_utf8(token).size());
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}
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token = utf_char;
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collecting = false;
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collecting_letter = false;
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collecting_numeric = false;
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collecting_special = false;
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collecting_whitespace_lookahead = false;
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}
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else {
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token += utf_char;
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}
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}
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start += offset;
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}
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return bpe_offsets;
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}
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// use std::wregex to split the text
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static std::vector<size_t> unicode_regex_split_stl(const std::wstring & wtext, const std::wstring & regex_expr, const std::vector<size_t> & offsets) {
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std::wregex expr(regex_expr);
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std::vector<size_t> bpe_offsets; // store the offset of each word
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bpe_offsets.reserve(offsets.size()); // Reserve memory for the approximate size
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size_t start = 0;
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for (auto offset : offsets) {
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std::wcregex_iterator it(wtext.data() + start, wtext.data() + start + offset, expr);
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std::wcregex_iterator end;
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int64_t start_idx = 0;
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while (it != end) {
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std::wcmatch match = *it;
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if (match.position() > start_idx) {
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bpe_offsets.emplace_back(match.position() - start_idx);
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}
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bpe_offsets.emplace_back(match.length());
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start_idx = match.position() + match.length();
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++it;
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}
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if (start_idx < (int64_t) offset) {
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bpe_offsets.emplace_back(offset - start_idx);
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}
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start += offset;
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}
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return bpe_offsets;
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}
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// use std::regex to split the text
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static std::vector<size_t> unicode_regex_split_stl(const std::string & text, const std::string & regex_expr, const std::vector<size_t> & offsets) {
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std::regex expr(regex_expr);
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std::vector<size_t> bpe_offsets; // store the offset of each word
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bpe_offsets.reserve(offsets.size()); // Reserve memory for the approximate size
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size_t start = 0;
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for (auto offset : offsets) {
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std::cregex_iterator it(text.data() + start, text.data() + start + offset, expr);
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std::cregex_iterator end;
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int64_t start_idx = 0;
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while (it != end) {
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std::cmatch match = *it;
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if (match.position() > start_idx) {
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bpe_offsets.emplace_back(match.position() - start_idx);
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}
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bpe_offsets.emplace_back(match.length());
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start_idx = match.position() + match.length();
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++it;
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}
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if (start_idx < (int64_t) offset) {
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bpe_offsets.emplace_back(offset - start_idx);
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}
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start += offset;
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}
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return bpe_offsets;
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}
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static std::vector<size_t> unicode_regex_split_custom(const std::string & text, const std::string & regex_expr, const std::vector<size_t> & offsets) {
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std::vector<size_t> bpe_offsets;
|
|
|
|
(void)(text);
|
|
(void)(regex_expr);
|
|
(void)(offsets);
|
|
// TODO: this implementation is actually wrong, uncomment and run:
|
|
// make -j && ./bin/test-tokenizer-0 ../models/ggml-vocab-gpt-2.gguf
|
|
//if (regex_expr == "'s|'t|'re|'ve|'m|'ll|'d| ?\\p{L}+| ?\\p{N}+| ?[^\\s\\p{L}\\p{N}]+|\\s+(?!\\S)") {
|
|
// bpe_offsets = unicode_regex_split_custom_gpt2(text, offsets);
|
|
//}
|
|
|
|
return bpe_offsets;
|
|
}
|
|
|
|
//
|
|
// interface
|
|
//
|
|
|
|
std::string unicode_cpt_to_utf8(uint32_t cp) {
|
|
std::string result;
|
|
|
|
if (/* 0x00 <= cp && */ cp <= 0x7f) {
|
|
result.push_back(cp);
|
|
return result;
|
|
}
|
|
if (0x80 <= cp && cp <= 0x7ff) {
|
|
result.push_back(0xc0 | ((cp >> 6) & 0x1f));
|
|
result.push_back(0x80 | (cp & 0x3f));
|
|
return result;
|
|
}
|
|
if (0x800 <= cp && cp <= 0xffff) {
|
|
result.push_back(0xe0 | ((cp >> 12) & 0x0f));
|
|
result.push_back(0x80 | ((cp >> 6) & 0x3f));
|
|
result.push_back(0x80 | (cp & 0x3f));
|
|
return result;
|
|
}
|
|
if (0x10000 <= cp && cp <= 0x10ffff) {
|
|
result.push_back(0xf0 | ((cp >> 18) & 0x07));
|
|
result.push_back(0x80 | ((cp >> 12) & 0x3f));
|
|
result.push_back(0x80 | ((cp >> 6) & 0x3f));
|
|
result.push_back(0x80 | (cp & 0x3f));
|
|
return result;
|
|
}
|
|
|
|
throw std::invalid_argument("invalid codepoint");
|
|
}
|
|
|
|
std::vector<uint32_t> unicode_cpts_normalize_nfd(const std::vector<uint32_t> & cpts) {
|
|
std::vector<uint32_t> result;
|
|
result.reserve(cpts.size());
|
|
for (size_t i = 0; i < cpts.size(); ++i) {
|
|
auto it = unicode_map_nfd.find(cpts[i]);
|
|
if (it == unicode_map_nfd.end()) {
|
|
result.push_back(cpts[i]);
|
|
} else {
|
|
result.push_back(it->second);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::vector<uint32_t> unicode_cpts_from_utf8(const std::string & utf8) {
|
|
std::vector<uint32_t> result;
|
|
size_t offset = 0;
|
|
while (offset < utf8.size()) {
|
|
result.push_back(unicode_cpt_from_utf8(utf8, offset));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
int unicode_cpt_type(uint32_t cp) {
|
|
static std::unordered_map<uint32_t, int> cpt_types = unicode_cpt_type_map();
|
|
const auto it = cpt_types.find(cp);
|
|
return it == cpt_types.end() ? CODEPOINT_TYPE_UNIDENTIFIED : it->second;
|
|
}
|
|
|
|
int unicode_cpt_type(const std::string & utf8) {
|
|
if (utf8.length() == 0) {
|
|
return CODEPOINT_TYPE_UNIDENTIFIED;
|
|
}
|
|
size_t offset = 0;
|
|
return unicode_cpt_type(unicode_cpt_from_utf8(utf8, offset));
|
|
}
|
|
|
|
std::string unicode_byte_to_utf8(uint8_t byte) {
|
|
static std::unordered_map<uint8_t, std::string> map = unicode_byte_to_utf8_map();
|
|
return map.at(byte);
|
|
}
|
|
|
|
uint8_t unicode_utf8_to_byte(const std::string & utf8) {
|
|
static std::unordered_map<std::string, uint8_t> map = unicode_utf8_to_byte_map();
|
|
return map.at(utf8);
|
|
}
|
|
|
|
char32_t unicode_tolower(char32_t cp) {
|
|
auto it = unicode_map_lowercase.find(cp);
|
|
return it == unicode_map_lowercase.end() ? cp : it->second;
|
|
}
|
|
|
|
std::vector<std::string> unicode_regex_split(const std::string & text, const std::vector<std::string> & regex_exprs) {
|
|
// unicode categories
|
|
static const std::map<std::string, int> k_ucat_enum = {
|
|
{ "\\p{N}", CODEPOINT_TYPE_NUMBER },
|
|
{ "\\p{L}", CODEPOINT_TYPE_LETTER },
|
|
{ "\\p{P}", CODEPOINT_TYPE_PUNCTUATION },
|
|
};
|
|
|
|
static const std::map<int, int> k_ucat_cpt = {
|
|
{ CODEPOINT_TYPE_NUMBER, 0xD1 },
|
|
{ CODEPOINT_TYPE_LETTER, 0xD2 },
|
|
{ CODEPOINT_TYPE_PUNCTUATION, 0xD3 },
|
|
};
|
|
|
|
static const std::map<int, std::string> k_ucat_map = {
|
|
{ CODEPOINT_TYPE_NUMBER, "\x30-\x39" }, // 0-9
|
|
{ CODEPOINT_TYPE_LETTER, "\x41-\x5A\x61-\x7A" }, // A-Za-z
|
|
{ CODEPOINT_TYPE_PUNCTUATION, "\x21-\x23\x25-\x2A\x2C-\x2F\x3A-\x3B\x3F-\x40\\\x5B-\\\x5D\x5F\\\x7B\\\x7D" }, // !-#%-*,-/:-;?-@\[-\]_\{\}
|
|
};
|
|
|
|
// compute collapsed codepoints only if needed by at least one regex
|
|
bool need_collapse = false;
|
|
for (auto & regex_expr : regex_exprs) {
|
|
// search for unicode categories
|
|
for (const auto & ucat : k_ucat_enum) {
|
|
if (std::string::npos != regex_expr.find(ucat.first)) {
|
|
need_collapse = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
const auto cpts = unicode_cpts_from_utf8(text);
|
|
|
|
// generate a "collapsed" representation of the text, where all codepoints are replaced by a single byte
|
|
// ref: https://github.com/ggerganov/llama.cpp/pull/6920#issuecomment-2081479935
|
|
std::string text_collapsed;
|
|
if (need_collapse) {
|
|
// collapse all unicode categories
|
|
text_collapsed.resize(cpts.size());
|
|
|
|
for (size_t i = 0; i < cpts.size(); ++i) {
|
|
// keep single-byte codepoints as is
|
|
if (cpts[i] < 128) {
|
|
text_collapsed[i] = cpts[i];
|
|
continue;
|
|
}
|
|
|
|
const int cpt_type = unicode_cpt_type(cpts[i]);
|
|
|
|
if (k_ucat_cpt.find(cpt_type) != k_ucat_cpt.end()) {
|
|
text_collapsed[i] = k_ucat_cpt.at(cpt_type);
|
|
} else {
|
|
text_collapsed[i] = (char) 0xD0; // fallback
|
|
}
|
|
}
|
|
}
|
|
|
|
std::vector<size_t> bpe_offsets = { cpts.size() };
|
|
|
|
for (auto & regex_expr : regex_exprs) {
|
|
// first, see if we have an efficient custom regex implementation
|
|
auto tmp = unicode_regex_split_custom(text, regex_expr, bpe_offsets);
|
|
|
|
if (!tmp.empty()) {
|
|
bpe_offsets = std::move(tmp);
|
|
continue;
|
|
}
|
|
|
|
// fallback to general-purpose std::regex / std::wregex
|
|
try {
|
|
// if a unicode category is used in the regex, we use the collapsed text and replace the unicode category
|
|
// with the corresponding collapsed representation
|
|
bool use_collapsed = false;
|
|
for (auto & ucat : k_ucat_enum) {
|
|
if (std::string::npos != regex_expr.find(ucat.first)) {
|
|
use_collapsed = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (use_collapsed) {
|
|
// sanity-check that the original regex does not contain any non-ASCII characters
|
|
const auto cpts_regex = unicode_cpts_from_utf8(regex_expr);
|
|
for (size_t i = 0; i < cpts_regex.size(); ++i) {
|
|
if (cpts_regex[i] >= 128) {
|
|
throw std::runtime_error("Regex includes both unicode categories and non-ASCII characters - not supported");
|
|
}
|
|
}
|
|
|
|
// generate a collapsed representation of the regex
|
|
std::string regex_expr_collapsed;
|
|
|
|
// track if we are inside [], because nested [] are not allowed
|
|
bool inside = false;
|
|
for (size_t i = 0; i < regex_expr.size(); ++i) {
|
|
if (regex_expr[i] == '[' && (i == 0 || regex_expr[i - 1] != '\\')) {
|
|
regex_expr_collapsed += '[';
|
|
inside = true;
|
|
continue;
|
|
}
|
|
|
|
if (inside && regex_expr[i] == ']' && regex_expr[i - 1] != '\\') {
|
|
regex_expr_collapsed += ']';
|
|
inside = false;
|
|
continue;
|
|
}
|
|
|
|
if (regex_expr[i + 0] == '\\' && i + 4 < regex_expr.size() &&
|
|
regex_expr[i + 1] == 'p' &&
|
|
regex_expr[i + 2] == '{' &&
|
|
regex_expr[i + 4] == '}') {
|
|
const std::string pat = regex_expr.substr(i, 5);
|
|
if (k_ucat_enum.find(pat) != k_ucat_enum.end()) {
|
|
if (!inside) {
|
|
regex_expr_collapsed += '[';
|
|
}
|
|
regex_expr_collapsed += k_ucat_cpt.at(k_ucat_enum.at(pat));
|
|
regex_expr_collapsed += k_ucat_map.at(k_ucat_enum.at(pat));
|
|
if (!inside) {
|
|
regex_expr_collapsed += ']';
|
|
}
|
|
i += 4;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
regex_expr_collapsed += regex_expr[i];
|
|
}
|
|
|
|
//printf("text_collapsed: %s\n", text_collapsed.c_str());
|
|
//printf("regex_expr_collapsed: %s\n", regex_expr_collapsed.c_str());
|
|
bpe_offsets = unicode_regex_split_stl(text_collapsed, regex_expr_collapsed, bpe_offsets);
|
|
} else {
|
|
// no unicode category used, we can use std::wregex directly
|
|
const std::wstring wtext = unicode_wstring_from_utf8(text);
|
|
const std::wstring wregex_expr = unicode_wstring_from_utf8(regex_expr);
|
|
|
|
//printf("text: %s\n", text.c_str());
|
|
//printf("regex_expr: %s\n", regex_expr.c_str());
|
|
bpe_offsets = unicode_regex_split_stl(wtext, wregex_expr, bpe_offsets);
|
|
}
|
|
} catch (std::regex_error & e) {
|
|
fprintf(stderr, "Failed to process regex: '%s'\n", regex_expr.c_str());
|
|
fprintf(stderr, "Regex error: %s\n", e.what());
|
|
throw std::runtime_error("Failed to process regex");
|
|
}
|
|
}
|
|
|
|
std::vector<std::string> bpe_words;
|
|
bpe_words.reserve(bpe_offsets.size()); // reserve memory for the approximate size
|
|
|
|
size_t start = 0;
|
|
for (size_t & offset : bpe_offsets) {
|
|
bpe_words.emplace_back();
|
|
for (size_t i = start; i < start + offset; ++i) {
|
|
bpe_words.back() += unicode_cpt_to_utf8(cpts[i]);
|
|
}
|
|
start += offset;
|
|
}
|
|
|
|
return unicode_byte_encoding_process(bpe_words);
|
|
}
|