mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
413 lines
11 KiB
C++
413 lines
11 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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carray.c++
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Convert a binary file to a C array.
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*******************************************************************************/
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#include <errno.h>
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#include <error.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if !defined(VERSIONSTR)
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#define VERSIONSTR "unknown version"
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#endif
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static void compact_arguments(int* argc, char*** argv)
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{
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for ( int i = 0; i < *argc; i++ )
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{
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while ( i < *argc && !(*argv)[i] )
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{
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for ( int n = i; n < *argc; n++ )
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(*argv)[n] = (*argv)[n+1];
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(*argc)--;
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}
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}
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}
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bool get_option_variable(const char* option, char** varptr,
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const char* arg, int argc, char** argv, int* ip,
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const char* argv0)
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{
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size_t option_len = strlen(option);
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if ( strncmp(option, arg, option_len) != 0 )
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return false;
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if ( arg[option_len] == '=' )
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{
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*varptr = strdup(arg + option_len + 1);
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return true;
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}
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if ( arg[option_len] != '\0' )
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return false;
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if ( *ip + 1 == argc )
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{
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fprintf(stderr, "%s: expected operand after `%s'\n", argv0, option);
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exit(1);
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}
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*varptr = strdup(argv[++*ip]), argv[*ip] = NULL;
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return true;
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}
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#define GET_OPTION_VARIABLE(str, varptr) \
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get_option_variable(str, varptr, arg, argc, argv, &i, argv0)
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void get_short_option_variable(char c, char** varptr,
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const char* arg, int argc, char** argv, int* ip,
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const char* argv0)
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{
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free(*varptr);
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if ( *(arg+1) )
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{
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*varptr = strdup(arg + 1);
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}
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else
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{
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if ( *ip + 1 == argc )
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{
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error(0, 0, "option requires an argument -- '%c'", c);
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fprintf(stderr, "Try `%s --help' for more information.\n", argv0);
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exit(1);
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}
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*varptr = strdup(argv[*ip + 1]);
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argv[++(*ip)] = NULL;
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}
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}
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#define GET_SHORT_OPTION_VARIABLE(c, varptr) \
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get_short_option_variable(c, varptr, arg, argc, argv, &i, argv0)
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static void help(FILE* fp, const char* argv0)
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{
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fprintf(fp, "Usage: %s [OPTION]... [INPUT...] -o OUTPUT\n", argv0);
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fprintf(fp, "Convert a binary file to a C array.\n");
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fprintf(fp, "\n");
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fprintf(fp, "Mandatory arguments to long options are mandatory for short options too.\n");
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fprintf(fp, " -c, --const add const keyword\n");
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fprintf(fp, " -e, --extern add extern keyword\n");
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fprintf(fp, " --extern-c use C linkage\n");
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fprintf(fp, " -f, --forward forward declare rather than define\n");
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fprintf(fp, " --guard=MACRO use include guard macro MACRO\n");
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fprintf(fp, " -g, --use-guard add include guard\n");
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fprintf(fp, " -i, --include include prerequisite headers\n");
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fprintf(fp, " --identifier=NAME use identifier NAME\n");
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fprintf(fp, " --includes=INCLUDES emit raw preprocessor INCLUDES\n");
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fprintf(fp, " -o, --output=FILE write result to FILE\n");
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fprintf(fp, " -r, --raw emit only raw \n");
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fprintf(fp, " -s, --static add static keyword\n");
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fprintf(fp, " --type=TYPE use type TYPE [unsigned char]\n");
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fprintf(fp, " -v, --volatile add volatile keyword\n");
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fprintf(fp, " --char use type char\n");
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fprintf(fp, " --signed-char use type signed char\n");
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fprintf(fp, " --unsigned-char use type unsigned char\n");
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fprintf(fp, " --int8_t use type int8_t\n");
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fprintf(fp, " --uint8_t use type uint8_t\n");
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fprintf(fp, " --help display this help and exit\n");
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fprintf(fp, " --version output version information and exit\n");
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}
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static void version(FILE* fp, const char* argv0)
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{
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fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
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fprintf(fp, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
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fprintf(fp, "This is free software: you are free to change and redistribute it.\n");
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fprintf(fp, "There is NO WARRANTY, to the extent permitted by law.\n");
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}
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int main(int argc, char* argv[])
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{
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setlocale(LC_ALL, "");
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bool flag_const = false;
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bool flag_extern_c = false;
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bool flag_extern = false;
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bool flag_forward = false;
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bool flag_guard = false;
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bool flag_include = false;
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bool flag_raw = false;
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bool flag_static = false;
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bool flag_volatile = false;
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char* arg_guard = NULL;
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char* arg_identifier = NULL;
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char* arg_includes = NULL;
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char* arg_output = NULL;
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char* arg_type = NULL;
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const char* argv0 = argv[0];
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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if ( arg[0] != '-' || !arg[1] )
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continue;
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argv[i] = NULL;
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if ( !strcmp(arg, "--") )
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break;
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if ( arg[1] != '-' )
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{
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while ( char c = *++arg ) switch ( c )
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{
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case 'c': flag_const = true; break;
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case 'e': flag_extern = true; break;
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case 'f': flag_forward = true; break;
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case 'g': flag_guard = true; break;
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case 'i': flag_include = true; break;
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case 'o': GET_SHORT_OPTION_VARIABLE('o', &arg_output); arg = "o"; break;
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case 'r': flag_raw = true; break;
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case 's': flag_static = true; break;
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case 'v': flag_volatile = true; break;
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default:
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fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
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help(stderr, argv0);
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exit(1);
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}
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}
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else if ( !strcmp(arg, "--help") )
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help(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--version") )
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version(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--const") )
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flag_const = true;
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else if ( !strcmp(arg, "--extern") )
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flag_extern = true;
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else if ( !strcmp(arg, "--forward") )
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flag_forward = true;
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else if ( !strcmp(arg, "--use-guard") )
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flag_guard = true;
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else if ( !strcmp(arg, "--include") )
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flag_include = true;
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else if ( !strcmp(arg, "--raw") )
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flag_raw = true;
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else if ( !strcmp(arg, "--static") )
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flag_static = true;
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else if ( !strcmp(arg, "--volatile") )
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flag_volatile = true;
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else if ( !strcmp(arg, "--char") )
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free(arg_type), arg_type = strdup("char");
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else if ( !strcmp(arg, "--signed-char") )
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free(arg_type), arg_type = strdup("signed char");
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else if ( !strcmp(arg, "--unsigned-char") )
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free(arg_type), arg_type = strdup("unsigned char");
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else if ( !strcmp(arg, "--int8_t") )
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free(arg_type), arg_type = strdup("int8_t");
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else if ( !strcmp(arg, "--uint8_t") )
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free(arg_type), arg_type = strdup("uint8_t");
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else if ( GET_OPTION_VARIABLE("--guard", &arg_guard) )
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flag_guard = true;
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else if ( GET_OPTION_VARIABLE("--identifier", &arg_identifier) ) { }
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else if ( GET_OPTION_VARIABLE("--includes", &arg_includes) )
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flag_include = true;
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else if ( GET_OPTION_VARIABLE("--output", &arg_output) ) { }
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else if ( GET_OPTION_VARIABLE("--type", &arg_type) ) { }
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else if ( !strcmp(arg, "--extern-c") )
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flag_extern_c = true;
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else
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{
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fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
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help(stderr, argv0);
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exit(1);
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}
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}
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compact_arguments(&argc, &argv);
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const char* output_path = arg_output;
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if ( flag_extern && flag_static )
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error(1, 0, "the --extern and --static are mutually incompatible");
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if ( flag_forward && flag_raw )
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error(1, 0, "the --forward and --raw are mutually incompatible");
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if ( !arg_type )
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arg_type = strdup("unsigned char");
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char* guard = arg_guard;
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if ( !guard )
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{
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if ( output_path )
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guard = strdup(output_path);
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else if ( 2 <= argc && strcmp(argv[1], "-") != 0 )
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asprintf(&guard, "%s_H", argv[1]);
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else
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guard = strdup("CARRAY_H");
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for ( size_t i = 0; guard[i]; i++ )
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{
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if ( 'A' <= guard[i] && guard[i] <= 'Z' )
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continue;
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else if ( 'a' <= guard[i] && guard[i] <= 'z' )
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guard[i] = 'A' + guard[i] - 'a';
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else if ( i != 0 && '0' <= guard[i] && guard[i] <= '9' )
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continue;
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else if ( guard[i] == '+' )
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guard[i] = 'X';
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else if ( i == 0 )
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guard[i] = 'X';
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else
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guard[i] = '_';
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}
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}
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if ( flag_include && !arg_includes )
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{
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if ( !strcmp(arg_type, "int8_t") ||
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!strcmp(arg_type, "uint8_t") )
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arg_includes = strdup("#include <stdint.h>");
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}
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char* identifier = arg_identifier;
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if ( !identifier )
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{
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if ( output_path )
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identifier = strdup(output_path);
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else if ( 2 <= argc && strcmp(argv[1], "-") != 0 )
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identifier = strdup(argv[1]);
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else
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identifier = strdup("carray");
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for ( size_t i = 0; identifier[i]; i++ )
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{
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if ( i && identifier[i] == '.' && !strchr(identifier + i, '/') )
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identifier[i] = '\0';
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else if ( 'a' <= identifier[i] && identifier[i] <= 'z' )
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continue;
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else if ( 'A' <= identifier[i] && identifier[i] <= 'Z' )
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identifier[i] = 'a' + identifier[i] - 'A';
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else if ( i != 0 && '0' <= identifier[i] && identifier[i] <= '9' )
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continue;
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else if ( guard[i] == '+' )
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identifier[i] = 'x';
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else if ( i == 0 )
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identifier[i] = 'x';
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else
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identifier[i] = '_';
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}
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}
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if ( output_path && !freopen(output_path, "w", stdout) )
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error(1, errno, "%s", output_path);
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if ( flag_guard && guard )
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{
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printf("#ifndef %s\n", guard);
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printf("#define %s\n", guard);
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printf("\n");
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}
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if ( flag_include && arg_includes )
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{
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printf("%s\n", arg_includes);
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printf("\n");
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}
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if ( !flag_raw )
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{
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if ( flag_extern_c )
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{
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printf("#if defined(__cplusplus)\n");
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printf("extern \"C\" {\n");
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printf("#endif\n");
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printf("\n");
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}
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if ( flag_extern )
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printf("extern ");
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if ( flag_static )
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printf("static ");
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if ( flag_const )
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printf("const ");
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if ( flag_volatile )
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printf("volatile ");
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printf("%s %s[]", arg_type, identifier);
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if ( flag_forward )
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printf(";\n");
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else
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printf(" = {\n");
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}
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if ( !flag_forward )
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{
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bool begun_row = false;
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unsigned int position = 0;
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for ( int i = 0; i < argc; i++ )
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{
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if ( i == 0 && 2 <= argc )
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continue;
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FILE* fp;
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const char* arg;
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if ( argc == 1 || !strcmp(argv[i], "-") )
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{
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arg = "<stdin>";
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fp = stdin;
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}
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else
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{
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arg = argv[i];
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fp = fopen(arg, "r");
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}
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if ( !fp )
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error(1, errno, "%s", arg);
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int ic;
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while ( (ic = fgetc(fp)) != EOF )
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{
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printf("%c0x%02X,", position++ ? ' ' : '\t', ic);
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begun_row = true;
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if ( position == (80 - 8) / 6 )
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{
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printf("\n");
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position = 0;
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begun_row = false;
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}
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}
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if ( ferror(fp) )
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error(1, errno, "fgetc: %s", arg);
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if ( fp != stdin )
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fclose(fp);
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}
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if ( begun_row )
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printf("\n");
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}
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if ( !flag_raw )
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{
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if ( !flag_forward )
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printf("};\n");
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if ( flag_extern_c )
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{
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printf("\n");
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printf("#if defined(__cplusplus)\n");
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printf("} /* extern \"C\" */\n");
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printf("#endif\n");
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}
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}
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if ( flag_guard && guard )
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{
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printf("\n");
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printf("#endif\n");
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}
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if ( ferror(stdout) || fflush(stdout) == EOF )
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error(1, errno, "%s", output_path ? output_path : "stdout");
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return 0;
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}
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