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https://github.com/tesseract-ocr/tesseract.git
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395 lines
22 KiB
C++
395 lines
22 KiB
C++
#include "tesseract/training/normstrngs.h"
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#include "tesseract/ccutil/strngs.h"
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#include "tesseract/ccutil/unichar.h"
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#include "tesseract/unittest/normstrngs_test.h"
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#include "util/utf8/public/unilib.h"
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namespace tesseract {
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namespace {
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static string EncodeAsUTF8(const char32 ch32) {
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UNICHAR uni_ch(ch32);
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return string(uni_ch.utf8(), uni_ch.utf8_len());
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}
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TEST(NormstrngsTest, BasicText) {
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const char* kBasicText = "AbCd Ef";
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string result;
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kBasicText,
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&result));
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EXPECT_STREQ(kBasicText, result.c_str());
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}
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TEST(NormstrngsTest, LigatureText) {
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const char* kTwoByteLigText = "ij"; // U+0133 (ij) -> ij
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string result;
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kTwoByteLigText,
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&result));
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EXPECT_STREQ("ij", result.c_str());
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const char* kThreeByteLigText = "finds"; // U+FB01 (fi) -> fi
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kThreeByteLigText,
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&result));
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EXPECT_STREQ("finds", result.c_str());
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}
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TEST(NormstrngsTest, OcrSpecificNormalization) {
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const char* kSingleQuoteText = "‘Hi"; // U+2018 (‘) -> U+027 (')
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string result;
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kSingleQuoteText,
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&result));
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EXPECT_STREQ("'Hi", result.c_str());
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const char* kDoubleQuoteText = "“Hi"; // U+201C (“) -> U+022 (")
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kDoubleQuoteText,
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&result));
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EXPECT_STREQ("\"Hi", result.c_str());
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const char* kEmDash = "Hi—"; // U+2014 (—) -> U+02D (-)
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNormalize,
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GraphemeNorm::kNormalize, kEmDash, &result));
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EXPECT_STREQ("Hi-", result.c_str());
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// Without the ocr normalization, these changes are not made.
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kSingleQuoteText,
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&result));
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EXPECT_STREQ(kSingleQuoteText, result.c_str());
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kDoubleQuoteText,
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&result));
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EXPECT_STREQ(kDoubleQuoteText, result.c_str());
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kEmDash, &result));
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EXPECT_STREQ(kEmDash, result.c_str());
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}
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// Sample text used in tests.
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const char kEngText[] = "the quick brown fox jumps over the lazy dog";
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const char kHinText[] = "पिताने विवाह की | हो गई उद्विग्न वह सोचा";
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const char kKorText[] = "이는 것으로";
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// Hindi words containing illegal vowel sequences.
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const char* kBadlyFormedHinWords[] = {"उपयोक्ताो", "नहीें", "प्रंात",
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"कहीअे", "पत्रिाका", "छह्णाीस"};
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const char* kBadlyFormedThaiWords[] = {"ฤิ", "กา้ํ", "กิำ"};
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TEST(NormstrngsTest, DetectsCorrectText) {
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string chars;
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kEngText, &chars));
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EXPECT_STREQ(kEngText, chars.c_str());
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kHinText, &chars))
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<< "Incorrect text: '" << kHinText << "'";
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EXPECT_STREQ(kHinText, chars.c_str());
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, kKorText, &chars));
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EXPECT_STREQ(kKorText, chars.c_str());
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}
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TEST(NormstrngsTest, DetectsIncorrectText) {
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for (int i = 0; i < ARRAYSIZE(kBadlyFormedHinWords); ++i) {
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EXPECT_FALSE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize,
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kBadlyFormedHinWords[i], nullptr))
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<< kBadlyFormedHinWords[i];
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}
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for (int i = 0; i < ARRAYSIZE(kBadlyFormedThaiWords); ++i) {
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EXPECT_FALSE(NormalizeUTF8String(UnicodeNormMode::kNFKC, OCRNorm::kNone,
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GraphemeNorm::kNormalize,
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kBadlyFormedThaiWords[i], nullptr))
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<< kBadlyFormedThaiWords[i];
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}
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}
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TEST(NormstrngsTest, NonIndicTextDoesntBreakIndicRules) {
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string nonindic = "Here's some latin text.";
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string dest;
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EXPECT_TRUE(NormalizeUTF8String(UnicodeNormMode::kNFC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, nonindic.c_str(),
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&dest))
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<< PrintString32WithUnicodes(nonindic);
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EXPECT_EQ(dest, nonindic);
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}
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TEST(NormstrngsTest, NoLonelyJoiners) {
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string str = "x\u200d\u0d06\u0d34\u0d02";
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std::vector<string> glyphs;
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// Returns true, but the joiner is gone.
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EXPECT_TRUE(NormalizeCleanAndSegmentUTF8(
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UnicodeNormMode::kNFC, OCRNorm::kNone, GraphemeNormMode::kCombined, true,
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str.c_str(), &glyphs))
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<< PrintString32WithUnicodes(str);
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EXPECT_EQ(glyphs.size(), 3);
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EXPECT_EQ(glyphs[0], string("x"));
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EXPECT_EQ(glyphs[1], string("\u0d06"));
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EXPECT_EQ(glyphs[2], string("\u0d34\u0d02"));
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}
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TEST(NormstrngsTest, NoLonelyJoinersPlus) {
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string str = "\u0d2a\u200d+\u0d2a\u0d4b";
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std::vector<string> glyphs;
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// Returns true, but the joiner is gone.
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EXPECT_TRUE(NormalizeCleanAndSegmentUTF8(
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UnicodeNormMode::kNFC, OCRNorm::kNone, GraphemeNormMode::kCombined, true,
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str.c_str(), &glyphs))
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<< PrintString32WithUnicodes(str);
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EXPECT_EQ(glyphs.size(), 3);
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EXPECT_EQ(glyphs[0], string("\u0d2a"));
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EXPECT_EQ(glyphs[1], string("+"));
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EXPECT_EQ(glyphs[2], string("\u0d2a\u0d4b"));
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}
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TEST(NormstrngsTest, NoLonelyJoinersNonAlpha) {
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string str = "\u200d+\u200c\u200d";
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// Returns true, but the joiners are gone.
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ExpectGraphemeModeResults(str, UnicodeNormMode::kNFC, 1, 1, 1, string("+"));
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str = "\u200d\u200c\u200d";
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// Without the plus, the string is invalid.
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string result;
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EXPECT_FALSE(NormalizeUTF8String(UnicodeNormMode::kNFC, OCRNorm::kNone,
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GraphemeNorm::kNormalize, str.c_str(),
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&result))
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<< PrintString32WithUnicodes(result);
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}
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TEST(NormstrngsTest, JoinersStayInArabic) {
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string str = "\u0628\u200c\u0628\u200d\u0628";
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// Returns true, string untouched.
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ExpectGraphemeModeResults(str, UnicodeNormMode::kNFC, 5, 5, 2, str);
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}
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TEST(NormstrngsTest, DigitOK) {
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string str = "\u0cea"; // Digit 4.
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ExpectGraphemeModeResults(str, UnicodeNormMode::kNFC, 1, 1, 1, str);
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}
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TEST(NormstrngsTest, DandaOK) {
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string str = "\u0964"; // Single danda.
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ExpectGraphemeModeResults(str, UnicodeNormMode::kNFC, 1, 1, 1, str);
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str = "\u0965"; // Double danda.
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ExpectGraphemeModeResults(str, UnicodeNormMode::kNFC, 1, 1, 1, str);
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}
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TEST(NormstrngsTest, AllScriptsRegtest) {
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// Tests some valid text in a large number of scripts, some of which were
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// found to be rejected by an earlier version.
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const std::vector<std::pair<string, string>> kScriptText(
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{{"Arabic",
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" فكان منهم علقمة بن قيس ، و إبراهيم النخعي ، و الأسود بن"
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"توفي بالمدينة في هذه السنة وهو ابن مائة وعشرين سنة "
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"مجموعه هیچ اثری در فنون هنر و ادب و ترجمه، تقدیم پیشگاه ارجمند "
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"سازنده تاریخ نگاه میکرد و به اصطلاح انسان و فطرت انسانی را زیربنای"},
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{"Armenian",
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"անտիկ աշխարհի փիլիսոփաների կենսագրությունը, թե′ նրանց ուս-"
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"պատրաստւում է դալ (բուլամա): Կովկասում կաթից նաև պատ-"
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"Հոգաբարձութեան յղել այդ անձին յիմարութիւնը հաստա-"
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"գծերը եւ միջագծերը կը համրուին վարէն վեր:"},
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{"Bengali",
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"এসে দাঁড়ায় দাও খানি উঁচিয়ে নিয়ে । ঝরনার স্বচ্ছ জলে প্রতিবিম্বিত "
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"পাঠিয়ে, গোবিন্দ স্মরণ করে, নির্ভয়ে রওনা হয়েছিল। তাতে সে "
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"সুলতার। মনে পড়ে বিয়ের সময় বাবা এদের বাড়ি থেকে ঘুরে "
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"কিন্তু তারপর মাতৃহৃদয় কেমন করে আছে? কী"},
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{"Cyrillic",
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"достей, є ще нагороди й почесті, є хай і сумнівна, але слава, "
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"вып., 96б). Параўн. найсвятший у 1 знач., насвятейший у 1 знач., "
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"»Правді«, — гітлерівські окупанти винищували нижчі раси, після дру- "
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"І знов майдан зачорнів од народу. Всередині чоло-"},
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{"Devanagari",
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"डा॰ नै हात्तीमाथि चढेर त्यो भएनेर आइपुगे। राजालाई देखी "
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"बाबतीत लिहिणे ही एक मोठीच जबाबदारी आहे. काकासाहेबांच्या कार्याचा "
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"प्रबंध, आधोगिक प्रबंध तथा बैंकिंग एवम वाणिज्य आदि विषयों में "
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"चित्रकृती दिल्या. शंभराहून अधिक देश आज आपापले चित्रपट निर्माण करीत"},
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{"Greek",
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"Μέσα ένα τετράδιο είχα στριμώξει το πρώτο "
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"νον αξίως τού ευαγγελίου τού χριστού πολιτεύεσθε, ίνα "
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"οὐδεμία ὑπ' αὐτοῦ μνεία γίνεται τῶν οἰκείων χωρίων. "
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"είτα την φάσιν αυτήν ην ούτος εποιήσατο κατά του Μίκω-"},
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{"Gujarati",
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"ઉપહારગૃહે ને નાટ્યસ્થળે આ એ જ તેલ કડકડતું "
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"શકી. ભાવવધારો અટકાવી નથી શકી અને બેકારીને "
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"ત્યાં વાંકુથી પાછે આવ્યો, ચોરીનો માલ સોંપવા ! "
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"કહી. એણે રેશમના કપડામાં વીંટી રાખેલ કુંવરીની છબી"},
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{"Gurmukhi",
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"ਯਾਦ ਰਹੇ ਕਿ ‘ਨਫਰਤ ’ ਦਾ ਵਿਸ਼ਾ ਕ੍ਰਾਤੀ ਨਹੀ ਹੈ ਅਤੇ ਕਵੀ ਦੀ ਇਹ "
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"ਮਹਾਂ ਨੰਦਾ ਕੋਲ ਇਕ ਚੀਜ਼ ਸੀ ਉਹ ਸੀ ਸਚ, ਕੋਰਾ ਸਚ, ਬੇਧਤ੍ਰਕ ਕਹਿੳ "
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"ਭੂਰਾ ਸਾਨੂੰ ਥੜਾ ਚੰਗਾ ਲਗਦਾ ਸੀ । ਉਸ ਦਾ ਇਕ ਪੈਰ ਜਨਮ ਤੋ "
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"ਨੂੰ ਇਹ ਅਧਿਕਾਰ ਦਿੱਤਾ ਕਿ ਉਹ ਸਿੱਖ ਵਿਰੋਧ ਦਾ ਸੰਗਠਨ ਕਰੇ ਅਤੇ 3 ਸਤੰਬਰ,"},
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{"Hangul",
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"로 들어갔다. 이대통령은 아이젠하워 대통령의 뒷모습을 보면서 "
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"그것뿐인 줄 아요? 노름도 했다 캅니다. 빌어묵을 놈이 그러 "
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"의 가장 과학적 태도이며, 우리 역사를 가장 정확하게 학습할 수 있는 "
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"마르크스 레"
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"각하는 그는 그들의 식사보장을 위해 때때로 집에"},
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{"HanS",
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"大凡世界上的先生可 分 三 种： 第一种只会教书， 只会拿一 "
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"书像是探宝一样，在茶叶店里我买过西湖龙井﹑黄山毛峰﹑福建的铁观音﹑大红"
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" "
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"持 “左” 倾冒险主义的干部，便扣上 “富农 "
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"笑说：“我听说了，王总工程师也跟我说过了，只是工作忙，谁"},
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{"HanT",
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"叁、 銀行資產管理的群組分析模式 "
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"民國六十三年，申請就讀台灣大學歷史研究所，並從事著述，"
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"質言之﹐在社會結構中﹐性質﹑特徵﹑地位相類似的一羣人﹐由於 "
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"董橋，一九四二年生，福建晉江人，國立成功大學外"},
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{"Hebrew",
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" אֵ-לִי, אֵ-לִי, כֵּיַצד מְטַפְּסִים בְּקִירוֹת שֶׁל זְכוּכִי"
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" הראשון חוצה אותי שוב. אני בסיבוב הרביעי, הוא בטח מתחיל את"
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" ווערטער געהאט, אבער דער עיקר איז ניט דאָס וואָרט, נאָר"
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" על גחלת היהדות המקורית בעירך, נתת צביון ואופי מיוחד"},
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{"Japanese",
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"は異民族とみなされていた。楚の荘王（前613〜前 "
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"を詳細に吟味する。実際の治療活動の領域は便宜上、(1) 障害者 "
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"困難性は多角企業の場合原則として部門別に判断されている.). "
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"☆ご希望の団体には見本をお送りします"},
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{"Kannada",
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"ಕೂಡ ಯುದ್ಧ ಮಾಡಿ ಜಯಪಡೆ. ನಂತರ ನಗರದೊಳಕ್ಕೆ ನಡೆ ಇದನ್ನು "
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"ಅಸಹ್ಯದೃಶ್ಯ ಯಾರಿಗಾದರೂ ನಾಚಿಕೆತರುವಂತಹದಾಗಿದೆ. ಆರೋಗ್ಯ ದೃಷ್ಟಿ "
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"ಯಾಗಲಿ, ಮೋಹನನಾಗಲಿ ಇಂಥ ಬಿಸಿಲಿನಲ್ಲಿ ಎಂದೂ ಬಹಳ ಹೊತ್ತು "
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"\"ಇದೆ...ಖಂಡಿತಾ ಇದೆ\" ಅಂದ ಮನಸ್ಸಿನಲ್ಲಿಯೇ ವಂದಿಸುತ್ತಾ,"},
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{"Khmer",
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"សិតសក់និងផ្លាស់សម្លៀកបំពាក់ពេលយប់ចេញ។ "
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"និយាយអំពីនគរនេះ ប្រាប់ដល់លោកទាំងមូលឲ្យដឹងច្បាស់លាស់អំពី "
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"កន្លះកាថាសម្រាប់ទន្ទេញឲ្យងាយចាំ បោះពុម្ពនៅក្នុងទ្រង់ទ្រាយបច្ចុប្បន្ន "
|
||
"ឯកសារនេះបានផ្សព្វផ្សាយនៅក្នុងសន្និសីទ"},
|
||
{"Lao",
|
||
"ເອີຍ ! ຟັງສຽງຟ້າມັນຮ້ອງຮ່ວນ ມັນດັງໄກໆ ເອີຍ "
|
||
"ໄດລຽງດູລາວມາດວບຄວາມລາບາກຫລາຍ; "
|
||
"ບາງໄດ້ ເຈົ້າລອງສູ້ບໍ່ໄດ້ຈຶ່ງຫນີລົງມາວຽງຈັນ. "
|
||
"ລົບອອກຈາກ 3 ເຫລືອ 1, ຂ້ອຍຂຽນ 1 (1)"},
|
||
{"Latin",
|
||
"režisoru, palīdzēja to manu domīgo, kluso Dzejas metru ielikt "
|
||
"Ešte nedávno sa chcel mladý Novomeský „liečiť” "
|
||
"tiivisia kysymyksiä, mistä seuraa, että spekula- | don luonteesta "
|
||
"Grabiel Sanchez, yang bertani selama 120 tahun meninggal"},
|
||
{"Malayalam",
|
||
"അമൂർത്തചിത്രമായിരിക്കും. ഛേ! ആ വീട്ടിലേക്ക് അവളൊന്നിച്ച് പോകേണ്ടതാ "
|
||
"മൃഗങ്ങൾക്ക് എന്തെക്കിലും പറ്റിയാൽ മാത്രം ഞാനതു "
|
||
"വെലക്ക് വേണമെങ്കിൽ തരാം. എന്തോ തരും? പറ. "
|
||
"എല്ലാം കഴിഞ്ഞ് സീനിയറിന്റെ അടുത്തു ചെന്ന് കാൽതൊട്ട"},
|
||
{"Tamil",
|
||
"பொருத்தமாகப் பாடினாள் நம் ஔவைப் பாட்டி. காவிரி "
|
||
"உள்ளடக்கி நிற்பது விநோத வார்த்தையின் அஃறிணை "
|
||
"சூரிய கிரஹண சமயத்தில் குருக்ஷேத்திரம் செல்வது "
|
||
"காலங்களில் வெளியே போகும்பொழுது, 'ஸார்', 'ஸார்',"},
|
||
{"Telugu",
|
||
"1892లో ఆమె 10వ సంవత్సరంలో గుంటూరు తాలూకా వేములాపాడు "
|
||
"ఫండ్స్ చట్టము'నందు చేయబడెను. తరువాత క్రీ. శ. "
|
||
"సంచారము చేయును. మీరు ఇప్పుడే కాళకాలయమునకు "
|
||
"ఎంతటి సరళమైన భాషలో వ్రాశాడో విశదమవుతుంది. పైగా ఆనాటి భాష"},
|
||
{"Thai",
|
||
"อ้อ! กับนัง....แม่ยอดพระกลิ่น นั่นเอง ! หรับก็ย่อมจะรู้โดยชัดเจนว่า "
|
||
"ถ้าตราบใดยังมีเรือปืนอยู่ใกล้ ๆ แล้ว ตราบนั้น "
|
||
"พระดำรินี้ ที่มีคตีท่ำกรวยหมากและธปเทียน "
|
||
"อันยานมีเรือเปนต้นฃ้ามยาก ฯ เพราะว่าแม่น้ำนั่นมีน้ำใสยิ่ง แม้เพียง"},
|
||
{"Vietnamese",
|
||
"vợ đến tai mụ hung thần Xăng-tô- mê-a. Mụ vô cùng "
|
||
"chiếc xe con gấu chạy qua nhà. Nhưng thỉnh thoảng "
|
||
"hòa hoãn với người Pháp để cho họ được dựng một ngôi nhà thờ nhỏ bằng "
|
||
"Cặp câu đói súc tích mà sâu sắc, là lời chúc lời"}});
|
||
|
||
for (const auto& p : kScriptText) {
|
||
string normalized;
|
||
EXPECT_TRUE(tesseract::NormalizeUTF8String(
|
||
tesseract::UnicodeNormMode::kNFKC, tesseract::OCRNorm::kNormalize,
|
||
tesseract::GraphemeNorm::kNormalize, p.second.c_str(), &normalized))
|
||
<< "Script=" << p.first << " text=" << p.second;
|
||
}
|
||
}
|
||
|
||
TEST(NormstrngsTest, IsWhitespace) {
|
||
// U+0020 is whitespace
|
||
EXPECT_TRUE(IsWhitespace(' '));
|
||
EXPECT_TRUE(IsWhitespace('\t'));
|
||
EXPECT_TRUE(IsWhitespace('\r'));
|
||
EXPECT_TRUE(IsWhitespace('\n'));
|
||
// U+2000 through U+200A
|
||
for (char32 ch = 0x2000; ch <= 0x200A; ++ch) {
|
||
SCOPED_TRACE(StringPrintf("Failed at U+%x", ch));
|
||
EXPECT_TRUE(IsWhitespace(ch));
|
||
}
|
||
// U+3000 is whitespace
|
||
EXPECT_TRUE(IsWhitespace(0x3000));
|
||
// ZWNBSP is not considered a space.
|
||
EXPECT_FALSE(IsWhitespace(0xFEFF));
|
||
}
|
||
|
||
TEST(NormstrngsTest, SpanUTF8Whitespace) {
|
||
EXPECT_EQ(4, SpanUTF8Whitespace(" \t\r\n"));
|
||
EXPECT_EQ(4, SpanUTF8Whitespace(" \t\r\nabc"));
|
||
EXPECT_EQ(0, SpanUTF8Whitespace("abc \t\r\nabc"));
|
||
EXPECT_EQ(0, SpanUTF8Whitespace(""));
|
||
}
|
||
|
||
TEST(NormstrngsTest, SpanUTF8NotWhitespace) {
|
||
const char kHinText[] = "पिताने विवाह";
|
||
const char kKorText[] = "이는 것으로 다시 넣을";
|
||
const char kMixedText[] = "والفكر 123 والصراع abc";
|
||
|
||
EXPECT_EQ(0, SpanUTF8NotWhitespace(""));
|
||
EXPECT_EQ(0, SpanUTF8NotWhitespace(" abc"));
|
||
EXPECT_EQ(0, SpanUTF8NotWhitespace("\rabc"));
|
||
EXPECT_EQ(0, SpanUTF8NotWhitespace("\tabc"));
|
||
EXPECT_EQ(0, SpanUTF8NotWhitespace("\nabc"));
|
||
EXPECT_EQ(3, SpanUTF8NotWhitespace("abc def"));
|
||
EXPECT_EQ(18, SpanUTF8NotWhitespace(kHinText));
|
||
EXPECT_EQ(6, SpanUTF8NotWhitespace(kKorText));
|
||
EXPECT_EQ(12, SpanUTF8NotWhitespace(kMixedText));
|
||
}
|
||
|
||
// Test that the method clones the util/utf8/public/unilib definition of
|
||
// interchange validity.
|
||
TEST(NormstrngsTest, IsInterchangeValid) {
|
||
const int32 kMinUnicodeValue = 33;
|
||
const int32 kMaxUnicodeValue = 0x10FFFF;
|
||
for (int32 ch = kMinUnicodeValue; ch <= kMaxUnicodeValue; ++ch) {
|
||
SCOPED_TRACE(StringPrintf("Failed at U+%x", ch));
|
||
EXPECT_EQ(UniLib::IsInterchangeValid(ch), IsInterchangeValid(ch));
|
||
}
|
||
}
|
||
|
||
// Test that the method clones the util/utf8/public/unilib definition of
|
||
// 7-bit ASCII interchange validity.
|
||
TEST(NormstrngsTest, IsInterchangeValid7BitAscii) {
|
||
const int32 kMinUnicodeValue = 33;
|
||
const int32 kMaxUnicodeValue = 0x10FFFF;
|
||
for (int32 ch = kMinUnicodeValue; ch <= kMaxUnicodeValue; ++ch) {
|
||
SCOPED_TRACE(StringPrintf("Failed at U+%x", ch));
|
||
string str = EncodeAsUTF8(ch);
|
||
EXPECT_EQ(UniLib::IsInterchangeValid7BitAscii(str),
|
||
IsInterchangeValid7BitAscii(ch));
|
||
}
|
||
}
|
||
|
||
// Test that the method clones the util/utf8/public/unilib definition of
|
||
// fullwidth-halfwidth .
|
||
TEST(NormstrngsTest, FullwidthToHalfwidth) {
|
||
// U+FF21 -> U+0041 (Latin capital letter A)
|
||
EXPECT_EQ('A', FullwidthToHalfwidth(0xFF21));
|
||
// U+FF05 -> U+0025 (percent sign)
|
||
EXPECT_EQ('%', FullwidthToHalfwidth(0xFF05));
|
||
// U+FFE6 -> U+20A9 (won sign)
|
||
EXPECT_EQ(0x20A9, FullwidthToHalfwidth(0xFFE6));
|
||
|
||
const int32 kMinUnicodeValue = 33;
|
||
const int32 kMaxUnicodeValue = 0x10FFFF;
|
||
for (int32 ch = kMinUnicodeValue; ch <= kMaxUnicodeValue; ++ch) {
|
||
if (!IsValidCodepoint(ch)) continue;
|
||
SCOPED_TRACE(StringPrintf("Failed at U+%x", ch));
|
||
string str = EncodeAsUTF8(ch);
|
||
const string expected_half_str =
|
||
UniLib::FullwidthToHalfwidth(str.c_str(), str.length(), true);
|
||
EXPECT_EQ(expected_half_str, EncodeAsUTF8(FullwidthToHalfwidth(ch)));
|
||
}
|
||
}
|
||
|
||
} // namespace
|
||
} // namespace tesseract
|