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FreeRDP/winpr/libwinpr/utils/cmdline.c

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/**
* WinPR: Windows Portable Runtime
* Command-Line Utils
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include <winpr/cmdline.h>
/**
* Command-line syntax: some basic concepts:
* https://pythonconquerstheuniverse.wordpress.com/2010/07/25/command-line-syntax-some-basic-concepts/
*/
/**
* Command-Line Syntax:
*
* <sigil><keyword><separator><value>
*
* <sigil>: '/' or '-' or ('+' | '-')
*
* <keyword>: option, named argument, flag
*
* <separator>: ':' or '='
*
* <value>: argument value
*
*/
int CommandLineParseArgumentsA(int argc, LPCSTR* argv, COMMAND_LINE_ARGUMENT_A* options, DWORD flags,
void* context, COMMAND_LINE_PRE_FILTER_FN_A preFilter, COMMAND_LINE_POST_FILTER_FN_A postFilter)
{
int i, j;
int status;
int count;
int length;
int index;
BOOL match;
char* sigil;
int sigil_length;
int sigil_index;
char* keyword;
int keyword_length;
int keyword_index;
char* separator;
int separator_length;
int separator_index;
char* value;
int value_length;
int value_index;
int toggle;
status = 0;
if (!argv)
return status;
if (argc == 1)
{
status = COMMAND_LINE_STATUS_PRINT_HELP;
return status;
}
for (i = 1; i < argc; i++)
{
index = i;
if (preFilter)
{
count = preFilter(context, i, argc, argv);
if (count < 0)
{
status = COMMAND_LINE_ERROR;
return status;
}
if (count > 0)
{
i += count;
continue;
}
}
sigil_index = 0;
sigil_length = 0;
sigil = (char*) &argv[i][sigil_index];
length = strlen(argv[i]);
if ((sigil[0] == '/') && (flags & COMMAND_LINE_SIGIL_SLASH))
{
sigil_length = 1;
}
else if ((sigil[0] == '-') && (flags & COMMAND_LINE_SIGIL_DASH))
{
sigil_length = 1;
if (length > 2)
{
if ((sigil[1] == '-') && (flags & COMMAND_LINE_SIGIL_DOUBLE_DASH))
sigil_length = 2;
}
}
else if ((sigil[0] == '+') && (flags & COMMAND_LINE_SIGIL_PLUS_MINUS))
{
sigil_length = 1;
}
else if ((sigil[0] == '-') && (flags & COMMAND_LINE_SIGIL_PLUS_MINUS))
{
sigil_length = 1;
}
else if (flags & COMMAND_LINE_SIGIL_NONE)
{
sigil_length = 0;
}
else
{
continue;
}
if ((sigil_length > 0) || (flags & COMMAND_LINE_SIGIL_NONE))
{
if (length < (sigil_length + 1))
return COMMAND_LINE_ERROR_NO_KEYWORD;
keyword_index = sigil_index + sigil_length;
keyword = (char*) &argv[i][keyword_index];
toggle = -1;
if (flags & COMMAND_LINE_SIGIL_ENABLE_DISABLE)
{
if (strncmp(keyword, "enable-", 7) == 0)
{
toggle = TRUE;
keyword_index += 7;
keyword = (char*) &argv[i][keyword_index];
}
else if (strncmp(keyword, "disable-", 8) == 0)
{
toggle = FALSE;
keyword_index += 8;
keyword = (char*) &argv[i][keyword_index];
}
}
separator = NULL;
if ((flags & COMMAND_LINE_SEPARATOR_COLON) && (!separator))
separator = strchr(keyword, ':');
if ((flags & COMMAND_LINE_SEPARATOR_EQUAL) && (!separator))
separator = strchr(keyword, '=');
if (separator)
{
separator_length = 1;
separator_index = (separator - argv[i]);
keyword_length = (separator - keyword);
value_index = separator_index + separator_length;
value = (char*) &argv[i][value_index];
value_length = (length - value_index);
}
else
{
separator_length = 0;
separator_index = -1;
keyword_length = (length - keyword_index);
value_index = -1;
value = NULL;
value_length = 0;
}
for (j = 0; options[j].Name != NULL; j++)
{
match = FALSE;
if (strncmp(options[j].Name, keyword, keyword_length) == 0)
{
if (strlen(options[j].Name) == keyword_length)
match = TRUE;
}
if ((!match) && (options[j].Alias != NULL))
{
if (strncmp(options[j].Alias, keyword, keyword_length) == 0)
{
if (strlen(options[j].Alias) == keyword_length)
match = TRUE;
}
}
if (!match)
continue;
options[j].Index = index;
if ((flags & COMMAND_LINE_SEPARATOR_SPACE) && ((i + 1) < argc))
{
int value_present = 1;
if (flags & COMMAND_LINE_SIGIL_DASH)
{
if (strncmp(argv[i + 1], "-", 1) == 0)
value_present = 0;
}
if (flags & COMMAND_LINE_SIGIL_DOUBLE_DASH)
{
if (strncmp(argv[i + 1], "--", 2) == 0)
value_present = 0;
}
if (flags & COMMAND_LINE_SIGIL_SLASH)
{
if (strncmp(argv[i + 1], "/", 1) == 0)
value_present = 0;
}
if (value_present)
{
i++;
value_index = 0;
length = strlen(argv[i]);
value = (char*) &argv[i][value_index];
value_length = (length - value_index);
}
}
if (!(flags & COMMAND_LINE_SEPARATOR_SPACE))
{
if (value && (options[j].Flags & COMMAND_LINE_VALUE_FLAG))
return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
}
else
{
if (value && (options[j].Flags & COMMAND_LINE_VALUE_FLAG))
{
i--;
value_index = -1;
value = NULL;
value_length = 0;
}
}
if (!value && (options[j].Flags & COMMAND_LINE_VALUE_REQUIRED))
{
status = COMMAND_LINE_ERROR_MISSING_VALUE;
return status;
}
options[j].Flags |= COMMAND_LINE_ARGUMENT_PRESENT;
if (value)
{
options[j].Value = value;
options[j].Flags |= COMMAND_LINE_VALUE_PRESENT;
}
else
{
if (options[j].Flags & COMMAND_LINE_VALUE_FLAG)
{
options[j].Value = (LPSTR) 1;
options[j].Flags |= COMMAND_LINE_VALUE_PRESENT;
}
else if (options[j].Flags & COMMAND_LINE_VALUE_BOOL)
{
if (flags & COMMAND_LINE_SIGIL_ENABLE_DISABLE)
{
if (toggle == -1)
options[j].Value = BoolValueTrue;
else if (!toggle)
options[j].Value = BoolValueFalse;
else
options[j].Value = BoolValueTrue;
}
else
{
if (sigil[0] == '+')
options[j].Value = BoolValueTrue;
else if (sigil[0] == '-')
options[j].Value = BoolValueFalse;
else
options[j].Value = BoolValueTrue;
}
options[j].Flags |= COMMAND_LINE_VALUE_PRESENT;
}
}
if (postFilter)
postFilter(context, &options[j]);
if (options[j].Flags & COMMAND_LINE_PRINT)
return COMMAND_LINE_STATUS_PRINT;
else if (options[j].Flags & COMMAND_LINE_PRINT_HELP)
return COMMAND_LINE_STATUS_PRINT_HELP;
else if (options[j].Flags & COMMAND_LINE_PRINT_VERSION)
return COMMAND_LINE_STATUS_PRINT_VERSION;
}
}
}
return status;
}
int CommandLineParseArgumentsW(int argc, LPCWSTR* argv, COMMAND_LINE_ARGUMENT_W* options, DWORD flags,
void* context, COMMAND_LINE_PRE_FILTER_FN_W preFilter, COMMAND_LINE_POST_FILTER_FN_W postFilter)
{
return 0;
}
int CommandLineClearArgumentsA(COMMAND_LINE_ARGUMENT_A* options)
{
int i;
for (i = 0; options[i].Name != NULL; i++)
{
options[i].Flags &= COMMAND_LINE_INPUT_FLAG_MASK;
options[i].Value = NULL;
}
return 0;
}
int CommandLineClearArgumentsW(COMMAND_LINE_ARGUMENT_W* options)
{
int i;
for (i = 0; options[i].Name != NULL; i++)
{
options[i].Flags &= COMMAND_LINE_INPUT_FLAG_MASK;
options[i].Value = NULL;
}
return 0;
}
COMMAND_LINE_ARGUMENT_A* CommandLineFindArgumentA(COMMAND_LINE_ARGUMENT_A* options, LPCSTR Name)
{
int i;
for (i = 0; options[i].Name != NULL; i++)
{
if (strcmp(options[i].Name, Name) == 0)
return &options[i];
if (options[i].Alias != NULL)
{
if (strcmp(options[i].Alias, Name) == 0)
return &options[i];
}
}
return NULL;
}
COMMAND_LINE_ARGUMENT_W* CommandLineFindArgumentW(COMMAND_LINE_ARGUMENT_W* options, LPCWSTR Name)
{
int i;
for (i = 0; options[i].Name != NULL; i++)
{
if (_wcscmp(options[i].Name, Name) == 0)
return &options[i];
if (options[i].Alias != NULL)
{
if (_wcscmp(options[i].Alias, Name) == 0)
return &options[i];
}
}
return NULL;
}
COMMAND_LINE_ARGUMENT_A* CommandLineFindNextArgumentA(COMMAND_LINE_ARGUMENT_A* argument)
{
COMMAND_LINE_ARGUMENT_A* nextArgument;
nextArgument = &argument[1];
if (nextArgument->Name == NULL)
return NULL;
return nextArgument;
}
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