mirror of
https://github.com/tesseract-ocr/tesseract.git
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335 lines
11 KiB
C++
335 lines
11 KiB
C++
// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "commandlineflags.h"
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#ifdef USE_STD_NAMESPACE
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namespace tesseract {
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bool IntFlagExists(const char* flag_name, inT32* value) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<IntParam*> empty;
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IntParam *p = ParamUtils::FindParam<IntParam>(
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full_flag_name.string(), GlobalParams()->int_params, empty);
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if (p == NULL) return false;
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*value = (inT32)(*p);
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return true;
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}
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bool DoubleFlagExists(const char* flag_name, double* value) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<DoubleParam*> empty;
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DoubleParam *p = ParamUtils::FindParam<DoubleParam>(
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full_flag_name.string(), GlobalParams()->double_params, empty);
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if (p == NULL) return false;
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*value = static_cast<double>(*p);
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return true;
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}
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bool BoolFlagExists(const char* flag_name, bool* value) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<BoolParam*> empty;
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BoolParam *p = ParamUtils::FindParam<BoolParam>(
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full_flag_name.string(), GlobalParams()->bool_params, empty);
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if (p == NULL) return false;
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*value = (BOOL8)(*p);
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return true;
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}
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bool StringFlagExists(const char* flag_name, const char** value) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<StringParam*> empty;
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StringParam *p = ParamUtils::FindParam<StringParam>(
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full_flag_name.string(), GlobalParams()->string_params, empty);
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*value = (p != NULL) ? p->string() : NULL;
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return p != NULL;
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}
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void SetIntFlagValue(const char* flag_name, const inT32 new_val) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<IntParam*> empty;
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IntParam *p = ParamUtils::FindParam<IntParam>(
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full_flag_name.string(), GlobalParams()->int_params, empty);
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ASSERT_HOST(p != NULL);
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p->set_value(new_val);
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}
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void SetDoubleFlagValue(const char* flag_name, const double new_val) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<DoubleParam*> empty;
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DoubleParam *p = ParamUtils::FindParam<DoubleParam>(
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full_flag_name.string(), GlobalParams()->double_params, empty);
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ASSERT_HOST(p != NULL);
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p->set_value(new_val);
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}
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void SetBoolFlagValue(const char* flag_name, const bool new_val) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<BoolParam*> empty;
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BoolParam *p = ParamUtils::FindParam<BoolParam>(
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full_flag_name.string(), GlobalParams()->bool_params, empty);
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ASSERT_HOST(p != NULL);
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p->set_value(new_val);
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}
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void SetStringFlagValue(const char* flag_name, const char* new_val) {
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STRING full_flag_name("FLAGS_");
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full_flag_name += flag_name;
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GenericVector<StringParam*> empty;
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StringParam *p = ParamUtils::FindParam<StringParam>(
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full_flag_name.string(), GlobalParams()->string_params, empty);
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ASSERT_HOST(p != NULL);
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p->set_value(STRING(new_val));
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}
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bool SafeAtoi(const char* str, int* val) {
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char *endptr = NULL;
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*val = strtol(str, &endptr, 10);
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return endptr != NULL && *endptr == '\0';
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}
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bool SafeAtod(const char* str, double* val) {
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char *endptr = NULL;
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*val = strtod(str, &endptr);
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return endptr != NULL && *endptr == '\0';
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}
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void PrintCommandLineFlags() {
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const char* kFlagNamePrefix = "FLAGS_";
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const int kFlagNamePrefixLen = strlen(kFlagNamePrefix);
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for (int i = 0; i < GlobalParams()->int_params.size(); ++i) {
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if (!strncmp(GlobalParams()->int_params[i]->name_str(),
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kFlagNamePrefix, kFlagNamePrefixLen)) {
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printf(" --%s %s (type:int default:%d)\n",
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GlobalParams()->int_params[i]->name_str() + kFlagNamePrefixLen,
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GlobalParams()->int_params[i]->info_str(),
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inT32(*(GlobalParams()->int_params[i])));
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}
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}
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for (int i = 0; i < GlobalParams()->double_params.size(); ++i) {
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if (!strncmp(GlobalParams()->double_params[i]->name_str(),
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kFlagNamePrefix, kFlagNamePrefixLen)) {
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printf(" --%s %s (type:double default:%g)\n",
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GlobalParams()->double_params[i]->name_str() + kFlagNamePrefixLen,
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GlobalParams()->double_params[i]->info_str(),
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static_cast<double>(*(GlobalParams()->double_params[i])));
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}
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}
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for (int i = 0; i < GlobalParams()->bool_params.size(); ++i) {
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if (!strncmp(GlobalParams()->bool_params[i]->name_str(),
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kFlagNamePrefix, kFlagNamePrefixLen)) {
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printf(" --%s %s (type:bool default:%s)\n",
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GlobalParams()->bool_params[i]->name_str() + kFlagNamePrefixLen,
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GlobalParams()->bool_params[i]->info_str(),
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(BOOL8(*(GlobalParams()->bool_params[i])) ? "true" : "false"));
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}
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}
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for (int i = 0; i < GlobalParams()->string_params.size(); ++i) {
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if (!strncmp(GlobalParams()->string_params[i]->name_str(),
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kFlagNamePrefix, kFlagNamePrefixLen)) {
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printf(" --%s %s (type:string default:%s)\n",
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GlobalParams()->string_params[i]->name_str() + kFlagNamePrefixLen,
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GlobalParams()->string_params[i]->info_str(),
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GlobalParams()->string_params[i]->string());
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}
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}
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}
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void ParseCommandLineFlags(const char* usage,
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int* argc, char*** argv,
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const bool remove_flags) {
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if (*argc == 1) {
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printf("USAGE: %s\n", usage);
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PrintCommandLineFlags();
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exit(0);
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}
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unsigned int i = 1;
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for (i = 1; i < *argc; ++i) {
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const char* current_arg = (*argv)[i];
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// If argument does not start with a hyphen then break.
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if (current_arg[0] != '-') {
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break;
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}
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// Position current_arg after startings hyphens. We treat a sequence of
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// consecutive hyphens of any length identically.
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while (*current_arg == '-') {
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++current_arg;
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}
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// If this is asking for usage, print the help message and abort.
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if (!strcmp(current_arg, "help") ||
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!strcmp(current_arg, "helpshort")) {
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tprintf("USAGE: %s\n", usage);
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PrintCommandLineFlags();
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exit(0);
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}
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// Find the starting position of the value if it was specified in this
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// string.
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const char* equals_position = strchr(current_arg, '=');
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const char* rhs = NULL;
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if (equals_position != NULL) {
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rhs = equals_position + 1;
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}
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// Extract the flag name.
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STRING lhs;
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if (equals_position == NULL) {
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lhs = current_arg;
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} else {
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lhs.assign(current_arg, equals_position - current_arg);
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}
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if (!lhs.length()) {
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tprintf("ERROR: Bad argument: %s\n", (*argv)[i]);
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exit(1);
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}
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// Find the flag name in the list of global flags.
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// inT32 flag
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inT32 int_val;
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if (IntFlagExists(lhs.string(), &int_val)) {
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if (rhs != NULL) {
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if (!strlen(rhs)) {
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// Bad input of the format --int_flag=
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tprintf("ERROR: Bad argument: %s\n", (*argv)[i]);
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exit(1);
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}
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if (!SafeAtoi(rhs, &int_val)) {
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tprintf("ERROR: Could not parse int from %s in flag %s\n",
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rhs, (*argv)[i]);
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exit(1);
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}
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} else {
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// We need to parse the next argument
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if (i + 1 >= *argc) {
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tprintf("ERROR: Could not find value argument for flag %s\n",
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lhs.string());
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exit(1);
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} else {
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++i;
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if (!SafeAtoi((*argv)[i], &int_val)) {
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tprintf("ERROR: Could not parse inT32 from %s\n", (*argv)[i]);
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exit(1);
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}
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}
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}
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SetIntFlagValue(lhs.string(), int_val);
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continue;
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}
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// double flag
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double double_val;
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if (DoubleFlagExists(lhs.string(), &double_val)) {
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if (rhs != NULL) {
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if (!strlen(rhs)) {
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// Bad input of the format --double_flag=
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tprintf("ERROR: Bad argument: %s\n", (*argv)[i]);
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exit(1);
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}
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if (!SafeAtod(rhs, &double_val)) {
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tprintf("ERROR: Could not parse double from %s in flag %s\n",
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rhs, (*argv)[i]);
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exit(1);
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}
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} else {
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// We need to parse the next argument
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if (i + 1 >= *argc) {
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tprintf("ERROR: Could not find value argument for flag %s\n",
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lhs.string());
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exit(1);
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} else {
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++i;
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if (!SafeAtod((*argv)[i], &double_val)) {
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tprintf("ERROR: Could not parse double from %s\n", (*argv)[i]);
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exit(1);
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}
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}
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}
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SetDoubleFlagValue(lhs.string(), double_val);
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continue;
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}
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// Bool flag. Allow input forms --flag (equivalent to --flag=true),
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// --flag=false, --flag=true, --flag=0 and --flag=1
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bool bool_val;
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if (BoolFlagExists(lhs.string(), &bool_val)) {
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if (rhs == NULL) {
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// --flag form
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bool_val = true;
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} else {
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if (!strlen(rhs)) {
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// Bad input of the format --bool_flag=
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tprintf("ERROR: Bad argument: %s\n", (*argv)[i]);
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exit(1);
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}
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if (!strcmp(rhs, "false") || !strcmp(rhs, "0")) {
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bool_val = false;
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} else if (!strcmp(rhs, "true") || !strcmp(rhs, "1")) {
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bool_val = true;
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} else {
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tprintf("ERROR: Could not parse bool from flag %s\n", (*argv)[i]);
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exit(1);
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}
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}
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SetBoolFlagValue(lhs.string(), bool_val);
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continue;
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}
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// string flag
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const char* string_val;
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if (StringFlagExists(lhs.string(), &string_val)) {
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if (rhs != NULL) {
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string_val = rhs;
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} else {
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// Pick the next argument
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if (i + 1 >= *argc) {
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tprintf("ERROR: Could not find string value for flag %s\n",
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lhs.string());
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exit(1);
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} else {
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string_val = (*argv)[++i];
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}
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}
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SetStringFlagValue(lhs.string(), string_val);
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continue;
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}
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// Flag was not found. Exit with an error message.
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tprintf("ERROR: Non-existent flag %s\n", (*argv)[i]);
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exit(1);
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} // for each argv
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if (remove_flags) {
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(*argv)[i - 1] = (*argv)[0];
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(*argv) += (i - 1);
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(*argc) -= (i - 1);
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}
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}
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} // namespace tesseract
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#else
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#include "base/init_google.h"
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namespace tesseract {
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void ParseCommandLineFlags(const char* usage,
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int* argc, char*** argv,
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const bool remove_flags) {
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InitGoogle(usage, argc, argv, remove_flags);
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}
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} // namespace tesseract
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#endif
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