mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2025-01-18 06:30:14 +08:00
tesseractmain.cpp: Split huge main() to sub functions
Add these functions to api/tesseractmain.cpp: PrintVersionInfo() PrintUsage() PrintHelpForPSM() PrintHelpMessage() SetVariablesFromCLArgs() PrintLangsList() FixPageSegMode() ParseArgs() PreloadRenderers()
This commit is contained in:
amitdo
parent
198ee0a820
commit
99110df757
@ -32,16 +32,8 @@
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#include "tprintf.h"
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#include "openclwrapper.h"
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#include "osdetect.h"
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#include "unicharset.h"
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/**********************************************************************
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* main()
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*
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**********************************************************************/
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int main(int argc, char **argv) {
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if ((argc == 2 && strcmp(argv[1], "-v") == 0) ||
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(argc == 2 && strcmp(argv[1], "--version") == 0)) {
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void PrintVersionInfo() {
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char *versionStrP;
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fprintf(stderr, "tesseract %s\n", tesseract::TessBaseAPI::Version());
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@ -76,120 +68,80 @@ int main(int argc, char **argv) {
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fprintf(stderr, " Device %d name: %s.\n", i+1, info);
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}
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#endif
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exit(0);
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}
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}
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// Make the order of args a bit more forgiving than it used to be.
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const char* lang = "eng";
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const char* image = NULL;
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const char* outputbase = NULL;
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const char* datapath = NULL;
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bool noocr = false;
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bool list_langs = false;
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bool print_parameters = false;
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GenericVector<STRING> vars_vec, vars_values;
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void PrintUsage(const char* program) {
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fprintf(stderr,
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"Usage:\n"
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" %s --help | --help-psm | --version\n"
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" %s --list-langs [--tessdata-dir PATH]\n"
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" %s --print-parameters [options...] [configfile...]\n"
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" %s imagename|stdin outputbase|stdout [options...] [configfile...]\n",
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program, program, program, program);
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}
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tesseract::PageSegMode pagesegmode = tesseract::PSM_AUTO;
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int arg = 1;
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while (arg < argc && (outputbase == NULL || argv[arg][0] == '-')) {
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if (strcmp(argv[arg], "-l") == 0 && arg + 1 < argc) {
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lang = argv[arg + 1];
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++arg;
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} else if (strcmp(argv[arg], "--tessdata-dir") == 0 && arg + 1 < argc) {
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datapath = argv[arg + 1];
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++arg;
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} else if (strcmp(argv[arg], "--user-words") == 0 && arg + 1 < argc) {
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vars_vec.push_back("user_words_file");
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vars_values.push_back(argv[arg + 1]);
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++arg;
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} else if (strcmp(argv[arg], "--user-patterns") == 0 && arg + 1 < argc) {
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vars_vec.push_back("user_patterns_file");
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vars_values.push_back(argv[arg + 1]);
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++arg;
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} else if (strcmp(argv[arg], "--list-langs") == 0) {
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noocr = true;
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list_langs = true;
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} else if (strcmp(argv[arg], "-psm") == 0 && arg + 1 < argc) {
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pagesegmode = static_cast<tesseract::PageSegMode>(atoi(argv[arg + 1]));
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++arg;
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} else if (strcmp(argv[arg], "--print-parameters") == 0) {
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noocr = true;
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print_parameters = true;
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} else if (strcmp(argv[arg], "-c") == 0 && arg + 1 < argc) {
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// handled properly after api init
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++arg;
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} else if (image == NULL) {
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image = argv[arg];
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} else if (outputbase == NULL) {
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outputbase = argv[arg];
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}
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++arg;
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}
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void PrintHelpForPSM() {
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const char* msg =
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"Page Segmentation Modes:\n"
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" 0 Orientation and script detection (OSD) only.\n"
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" 1 Automatic page segmentation with OSD.\n"
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" 2 Automatic page segmentation, but no OSD, or OCR\n"
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" 3 Fully automatic page segmentation, but no OSD. (Default)\n"
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" 4 Assume a single column of text of variable sizes.\n"
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" 5 Assume a single uniform block of vertically aligned text.\n"
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" 6 Assume a single uniform block of text.\n"
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" 7 Treat the image as a single text line.\n"
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" 8 Treat the image as a single word.\n"
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" 9 Treat the image as a single word in a circle.\n"
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" 10 Treat the image as a single character.\n"
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if (argc == 2 && strcmp(argv[1], "--list-langs") == 0) {
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list_langs = true;
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noocr = true;
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}
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//TODO: Consider publishing these modes.
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#if 0
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" 11 Sparse text. Find as much text as possible in no"
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" particular order.\n"
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" 12 Sparse text with OSD.\n"
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" 13 Raw line. Treat the image as a single text line,\n"
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"\t\t\tbypassing hacks that are Tesseract-specific.\n"
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#endif
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;
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if (outputbase == NULL && noocr == false) {
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fprintf(stderr, "Usage:\n %s imagename|stdin outputbase|stdout "
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"[options...] [configfile...]\n\n", argv[0]);
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fprintf(stderr, "%s", msg);
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}
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fprintf(stderr, "OCR options:\n");
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fprintf(stderr, " --tessdata-dir /path\tspecify the location of tessdata"
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" path\n");
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fprintf(stderr, " --user-words /path/to/file\tspecify the location of user"
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" words file\n");
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fprintf(stderr, " --user-patterns /path/to/file\tspecify the location of"
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" user patterns file\n");
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fprintf(stderr, " -l lang[+lang]\tspecify language(s) used for OCR\n");
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fprintf(stderr, " -c configvar=value\tset value for control parameter.\n"
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"\t\t\tMultiple -c arguments are allowed.\n");
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fprintf(stderr, " -psm pagesegmode\tspecify page segmentation mode.\n");
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fprintf(stderr, "These options must occur before any configfile.\n\n");
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fprintf(stderr,
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"pagesegmode values are:\n"
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" 0 = Orientation and script detection (OSD) only.\n"
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" 1 = Automatic page segmentation with OSD.\n"
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" 2 = Automatic page segmentation, but no OSD, or OCR\n"
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" 3 = Fully automatic page segmentation, but no OSD. (Default)\n"
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" 4 = Assume a single column of text of variable sizes.\n"
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" 5 = Assume a single uniform block of vertically aligned text.\n"
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" 6 = Assume a single uniform block of text.\n"
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" 7 = Treat the image as a single text line.\n"
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" 8 = Treat the image as a single word.\n"
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" 9 = Treat the image as a single word in a circle.\n"
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" 10 = Treat the image as a single character.\n\n");
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fprintf(stderr, "Single options:\n");
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fprintf(stderr, " -v --version: version info\n");
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fprintf(stderr, " --list-langs: list available languages for tesseract "
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"engine. Can be used with --tessdata-dir.\n");
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fprintf(stderr, " --print-parameters: print tesseract parameters to the "
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"stdout.\n");
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exit(1);
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}
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void PrintHelpMessage(const char* program) {
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PrintUsage(program);
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if (outputbase != NULL && strcmp(outputbase, "-") &&
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strcmp(outputbase, "stdout")) {
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tprintf("Tesseract Open Source OCR Engine v%s with Leptonica\n",
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tesseract::TessBaseAPI::Version());
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}
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PERF_COUNT_START("Tesseract:main")
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tesseract::TessBaseAPI api;
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const char* msg =
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"\n\n"
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"Options:\n"
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" -h, --help" "\tShow this help message.\n"
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" --help-psm" "\tShow Page Segmentation Modes.\n"
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" -v, --version" "\tShow version information.\n\n"
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api.SetOutputName(outputbase);
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int rc = api.Init(datapath, lang, tesseract::OEM_DEFAULT,
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&(argv[arg]), argc - arg, &vars_vec, &vars_values, false);
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" --list-langs" "\tlist available languages for tesseract engine.\n\n"
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if (rc) {
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fprintf(stderr, "Could not initialize tesseract.\n");
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exit(1);
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}
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" --tessdata-dir PATH" "\tspecify the location of tessdata path.\n"
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" --print-parameters" "\tprint tesseract parameters to the stdout.\n"
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" --user-words PATH" "\tspecify the location of user words"
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" file.\n"
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" --user-patterns PATH" "\tspecify the location of"
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" user patterns file.\n"
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" -l LANG[+LANG]" "\tspecify language(s) used for OCR.\n"
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" -c VAR=VALUE" "\tset value for config variables.\n"
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"\t\t\tMultiple -c arguments are allowed.\n"
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" -psm NUM" "\tspecify page segmentation mode.\n"
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" NOTE: The options above must occur before any configfile.\n"
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;
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fprintf(stderr, "%s\n", msg);
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PrintHelpForPSM();
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}
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void SetVariablesFromCLArgs(tesseract::TessBaseAPI* api, int argc, char** argv) {
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char opt1[256], opt2[255];
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for (arg = 0; arg < argc; arg++) {
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if (strcmp(argv[arg], "-c") == 0 && arg + 1 < argc) {
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strncpy(opt1, argv[arg + 1], 255);
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for (int i = 0; i < argc; i++) {
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if (strcmp(argv[i], "-c") == 0 && i + 1 < argc) {
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strncpy(opt1, argv[i + 1], 255);
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opt1[255] = '\0';
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char *p = strchr(opt1, '=');
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if (!p) {
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@ -197,26 +149,212 @@ int main(int argc, char **argv) {
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exit(1);
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}
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*p = 0;
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strncpy(opt2, strchr(argv[arg + 1], '=') + 1, 255);
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strncpy(opt2, strchr(argv[i + 1], '=') + 1, 255);
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opt2[254] = 0;
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++arg;
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++i;
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if (!api.SetVariable(opt1, opt2)) {
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if (!api->SetVariable(opt1, opt2)) {
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fprintf(stderr, "Could not set option: %s=%s\n", opt1, opt2);
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}
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}
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}
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}
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void PrintLangsList(tesseract::TessBaseAPI* api) {
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GenericVector<STRING> languages;
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api->GetAvailableLanguagesAsVector(&languages);
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fprintf(stderr, "List of available languages (%d):\n",
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languages.size());
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for (int index = 0; index < languages.size(); ++index) {
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STRING& string = languages[index];
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fprintf(stderr, "%s\n", string.string());
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}
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api->End();
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}
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/**
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* We have 2 possible sources of pagesegmode: a config file and
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* the command line. For backwards compatibility reasons, the
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* default in tesseract is tesseract::PSM_SINGLE_BLOCK, but the
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* default for this program is tesseract::PSM_AUTO. We will let
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* the config file take priority, so the command-line default
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* can take priority over the tesseract default, so we use the
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* value from the command line only if the retrieved mode
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* is still tesseract::PSM_SINGLE_BLOCK, indicating no change
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* in any config file. Therefore the only way to force
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* tesseract::PSM_SINGLE_BLOCK is from the command line.
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* It would be simpler if we could set the value before Init,
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* but that doesn't work.
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*/
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void FixPageSegMode(tesseract::TessBaseAPI* api,
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tesseract::PageSegMode pagesegmode) {
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if (api->GetPageSegMode() == tesseract::PSM_SINGLE_BLOCK)
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api->SetPageSegMode(pagesegmode);
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}
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// NOTE: arg_i is used here to avoid ugly *i so many times in this function
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void ParseArgs(const int argc, char** argv,
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const char** lang,
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const char** image,
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const char** outputbase,
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const char** datapath,
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bool* list_langs,
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bool* print_parameters,
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GenericVector<STRING>* vars_vec,
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GenericVector<STRING>* vars_values,
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int* arg_i,
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tesseract::PageSegMode* pagesegmode) {
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if (argc == 1) {
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PrintHelpMessage(argv[0]);
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exit(0);
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}
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if (argc == 2) {
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if ((strcmp(argv[1], "-h") == 0) ||
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(strcmp(argv[1], "--help") == 0)) {
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PrintHelpMessage(argv[0]);
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exit(0);
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}
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if ((strcmp(argv[1], "--help-psm") == 0)) {
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PrintHelpForPSM();
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exit(0);
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}
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if ((strcmp(argv[1], "-v") == 0) ||
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(strcmp(argv[1], "--version") == 0)) {
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PrintVersionInfo();
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exit(0);
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}
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}
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bool noocr = false;
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int i = 1;
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while (i < argc && (*outputbase == NULL || argv[i][0] == '-')) {
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if (strcmp(argv[i], "-l") == 0 && i + 1 < argc) {
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*lang = argv[i + 1];
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++i;
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} else if (strcmp(argv[i], "--tessdata-dir") == 0 && i + 1 < argc) {
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*datapath = argv[i + 1];
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++i;
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} else if (strcmp(argv[i], "--user-words") == 0 && i + 1 < argc) {
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vars_vec->push_back("user_words_file");
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vars_values->push_back(argv[i + 1]);
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++i;
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} else if (strcmp(argv[i], "--user-patterns") == 0 && i + 1 < argc) {
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vars_vec->push_back("user_patterns_file");
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vars_values->push_back(argv[i + 1]);
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++i;
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} else if (strcmp(argv[i], "--list-langs") == 0) {
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noocr = true;
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*list_langs = true;
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} else if (strcmp(argv[i], "-psm") == 0 && i + 1 < argc) {
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*pagesegmode = static_cast<tesseract::PageSegMode>(atoi(argv[i + 1]));
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++i;
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} else if (strcmp(argv[i], "--print-parameters") == 0) {
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noocr = true;
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*print_parameters = true;
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} else if (strcmp(argv[i], "-c") == 0 && i + 1 < argc) {
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// handled properly after api init
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++i;
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} else if (*image == NULL) {
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*image = argv[i];
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} else if (*outputbase == NULL) {
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*outputbase = argv[i];
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}
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++i;
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}
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*arg_i = i;
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if (argc == 2 && strcmp(argv[1], "--list-langs") == 0) {
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*list_langs = true;
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noocr = true;
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}
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if (*outputbase == NULL && noocr == false) {
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PrintHelpMessage(argv[0]);
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exit(1);
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}
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if (*outputbase != NULL && strcmp(*outputbase, "-") &&
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strcmp(*outputbase, "stdout")) {
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tprintf("Tesseract Open Source OCR Engine v%s with Leptonica\n",
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tesseract::TessBaseAPI::Version());
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}
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}
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void PreloadRenderers(tesseract::TessBaseAPI* api,
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tesseract::PointerVector<tesseract::TessResultRenderer>* renderers,
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tesseract::PageSegMode pagesegmode,
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const char* outputbase) {
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if (pagesegmode == tesseract::PSM_OSD_ONLY) {
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renderers->push_back(new tesseract::TessOsdRenderer(outputbase));
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} else {
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bool b;
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api->GetBoolVariable("tessedit_create_hocr", &b);
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if (b) {
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bool font_info;
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api->GetBoolVariable("hocr_font_info", &font_info);
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renderers->push_back(new tesseract::TessHOcrRenderer(outputbase, font_info));
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}
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api->GetBoolVariable("tessedit_create_pdf", &b);
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if (b) {
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renderers->push_back(new tesseract::TessPDFRenderer(outputbase,
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api->GetDatapath()));
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}
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api->GetBoolVariable("tessedit_write_unlv", &b);
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if (b) renderers->push_back(new tesseract::TessUnlvRenderer(outputbase));
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api->GetBoolVariable("tessedit_create_boxfile", &b);
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if (b) renderers->push_back(new tesseract::TessBoxTextRenderer(outputbase));
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api->GetBoolVariable("tessedit_create_txt", &b);
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if (b) renderers->push_back(new tesseract::TessTextRenderer(outputbase));
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}
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if (!renderers->empty()) {
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// Since the PointerVector auto-deletes, null-out the renderers that are
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// added to the root, and leave the root in the vector.
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for (int r = 1; r < renderers->size(); ++r) {
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(*renderers)[0]->insert((*renderers)[r]);
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(*renderers)[r] = NULL;
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}
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}
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}
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/**********************************************************************
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* main()
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*
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**********************************************************************/
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int main(int argc, char **argv) {
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const char* lang = "eng";
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const char* image = NULL;
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const char* outputbase = NULL;
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const char* datapath = NULL;
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bool list_langs = false;
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bool print_parameters = false;
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GenericVector<STRING> vars_vec, vars_values;
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int arg_i = 1;
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tesseract::PageSegMode pagesegmode = tesseract::PSM_AUTO;
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ParseArgs(argc, argv,
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&lang, &image, &outputbase, &datapath,
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&list_langs, &print_parameters,
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&vars_vec, &vars_values, &arg_i, &pagesegmode);
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PERF_COUNT_START("Tesseract:main")
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tesseract::TessBaseAPI api;
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api.SetOutputName(outputbase);
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int init_failed = api.Init(datapath, lang, tesseract::OEM_DEFAULT,
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&(argv[arg_i]), argc - arg_i, &vars_vec, &vars_values, false);
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if (init_failed) {
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fprintf(stderr, "Could not initialize tesseract.\n");
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exit(1);
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}
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SetVariablesFromCLArgs(&api, argc, argv);
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if (list_langs) {
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GenericVector<STRING> languages;
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api.GetAvailableLanguagesAsVector(&languages);
|
||||
fprintf(stderr, "List of available languages (%d):\n",
|
||||
languages.size());
|
||||
for (int index = 0; index < languages.size(); ++index) {
|
||||
STRING& string = languages[index];
|
||||
fprintf(stderr, "%s\n", string.string());
|
||||
}
|
||||
api.End();
|
||||
PrintLangsList(&api);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
@ -228,20 +366,7 @@ int main(int argc, char **argv) {
|
||||
exit(0);
|
||||
}
|
||||
|
||||
// We have 2 possible sources of pagesegmode: a config file and
|
||||
// the command line. For backwards compatibility reasons, the
|
||||
// default in tesseract is tesseract::PSM_SINGLE_BLOCK, but the
|
||||
// default for this program is tesseract::PSM_AUTO. We will let
|
||||
// the config file take priority, so the command-line default
|
||||
// can take priority over the tesseract default, so we use the
|
||||
// value from the command line only if the retrieved mode
|
||||
// is still tesseract::PSM_SINGLE_BLOCK, indicating no change
|
||||
// in any config file. Therefore the only way to force
|
||||
// tesseract::PSM_SINGLE_BLOCK is from the command line.
|
||||
// It would be simpler if we could set the value before Init,
|
||||
// but that doesn't work.
|
||||
if (api.GetPageSegMode() == tesseract::PSM_SINGLE_BLOCK)
|
||||
api.SetPageSegMode(pagesegmode);
|
||||
FixPageSegMode(&api, pagesegmode);
|
||||
|
||||
if (pagesegmode == tesseract::PSM_AUTO_ONLY) {
|
||||
int ret_val = 0;
|
||||
@ -275,52 +400,15 @@ int main(int argc, char **argv) {
|
||||
exit(ret_val);
|
||||
}
|
||||
|
||||
if (pagesegmode == tesseract::PSM_OSD_ONLY) {
|
||||
tesseract::TessResultRenderer* renderer =
|
||||
new tesseract::TessOsdRenderer(outputbase);
|
||||
|
||||
bool succeed = api.ProcessPages(image, NULL, 0, renderer);
|
||||
if (succeed) {
|
||||
PERF_COUNT_END
|
||||
return 0;
|
||||
} else {
|
||||
fprintf(stderr, "Error during processing.\n");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
bool b;
|
||||
tesseract::PointerVector<tesseract::TessResultRenderer> renderers;
|
||||
api.GetBoolVariable("tessedit_create_hocr", &b);
|
||||
if (b) {
|
||||
bool font_info;
|
||||
api.GetBoolVariable("hocr_font_info", &font_info);
|
||||
renderers.push_back(new tesseract::TessHOcrRenderer(outputbase, font_info));
|
||||
}
|
||||
api.GetBoolVariable("tessedit_create_pdf", &b);
|
||||
if (b) {
|
||||
renderers.push_back(new tesseract::TessPDFRenderer(outputbase,
|
||||
api.GetDatapath()));
|
||||
}
|
||||
api.GetBoolVariable("tessedit_write_unlv", &b);
|
||||
if (b) renderers.push_back(new tesseract::TessUnlvRenderer(outputbase));
|
||||
api.GetBoolVariable("tessedit_create_boxfile", &b);
|
||||
if (b) renderers.push_back(new tesseract::TessBoxTextRenderer(outputbase));
|
||||
api.GetBoolVariable("tessedit_create_txt", &b);
|
||||
if (b) renderers.push_back(new tesseract::TessTextRenderer(outputbase));
|
||||
PreloadRenderers(&api, &renderers, pagesegmode, outputbase);
|
||||
if (!renderers.empty()) {
|
||||
// Since the PointerVector auto-deletes, null-out the renderers that are
|
||||
// added to the root, and leave the root in the vector.
|
||||
for (int r = 1; r < renderers.size(); ++r) {
|
||||
renderers[0]->insert(renderers[r]);
|
||||
renderers[r] = NULL;
|
||||
}
|
||||
if (!api.ProcessPages(image, NULL, 0, renderers[0])) {
|
||||
bool succeed = api.ProcessPages(image, NULL, 0, renderers[0]);
|
||||
if (!succeed) {
|
||||
fprintf(stderr, "Error during processing.\n");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
PERF_COUNT_END
|
||||
return 0; // Normal exit
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user