From e3940eb2080711edac189cca3f642ee89dc215f2 Mon Sep 17 00:00:00 2001 From: patacongo Date: Sat, 17 Feb 2007 23:21:28 +0000 Subject: NuttX RTOS git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/tools/mkconfig.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 nuttx/tools/mkconfig.c (limited to 'nuttx/tools/mkconfig.c') diff --git a/nuttx/tools/mkconfig.c b/nuttx/tools/mkconfig.c new file mode 100644 index 000000000..6de8ddd93 --- /dev/null +++ b/nuttx/tools/mkconfig.c @@ -0,0 +1,239 @@ +/************************************************************ + * mkconfig.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name Gregory Nutt nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************/ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include + +#define DEFCONFIG "defconfig" +#define LINESIZE 256 + +static char line[LINESIZE+1]; + +static char *skip_space(char *ptr) +{ + while (*ptr && isspace(*ptr)) ptr++; + return ptr; +} + +static char *find_end(char *ptr) +{ + while (*ptr && (isalnum(*ptr) || *ptr == '_')) ptr++; + return ptr; +} + +static char *find_comment(char *ptr) +{ + while (*ptr && *ptr != '"' && *ptr != '\n') ptr++; + if (*ptr == '"') ptr++; + return ptr; +} + +static char *read_line(FILE *stream) +{ + char *ptr; + + for (;;) + { + line[LINESIZE] = '\0'; + if (!fgets(line, LINESIZE, stream)) + { + return NULL; + } + else + { + ptr = skip_space(line); + if (*ptr && *ptr != '#' && *ptr != '\n') + { + return ptr; + } + } + } +} + +static void parse_line(char *ptr, char **varname, char **varval) +{ + *varname = ptr; + *varval = NULL; + + ptr = find_end(ptr); + if (*ptr && *ptr != '=') + { + *ptr = '\0'; + ptr = skip_space(ptr + 1); + } + + if (*ptr == '=') + { + *ptr = '\0'; + ptr = skip_space(ptr + 1); + if (*ptr) + { + *varval = ptr; + if (*ptr == '"') + { + ptr = find_comment(ptr); + } + else + { + ptr = find_end(ptr); + } + *ptr = '\0'; + } + } +} + +static void parse_file(FILE *stream) +{ + char *varname; + char *varval; + char *ptr; + + do + { + ptr = read_line(stream); + if (ptr) + { + parse_line(ptr, &varname, &varval); + if (varname) + { + if (!varval || strcmp(varval, "n") == 0) + { + printf("#undef %s\n", varname); + } + else if (strcmp(varval, "y") == 0) + { + printf("#define %s 1\n", varname); + } + else + { + printf("#define %s %s\n", varname, varval); + } + } + } + } + while (ptr); +} + +static void show_usage(const char *progname) +{ + fprintf(stderr, "USAGE: %s \n", progname); + exit(1); +} + +int main(int argc, char **argv, char **envp) +{ + char *filepath; + FILE *stream; + int status; + + if (argc != 2) + { + fprintf(stderr, "Unexpected number of arguments\n"); + show_usage(argv[0]); + } + + status = asprintf(&filepath, "%s/" DEFCONFIG, argv[1]); + if (status < 0) + { + fprintf(stderr, "asprintf failed\n"); + exit(2); + } + + stream= fopen(filepath, "r"); + if (!stream) + { + fprintf(stderr, "open %s failed: %s\n", filepath, strerror(errno)); + exit(3); + } + + printf("/* config.h -- Autogenerated! Do not edit. */\n\n"); + printf("#ifndef __ARCH_CONFIG_H\n"); + printf("#define __ARCH_CONFIG_H\n\n"); + printf("/* Architecture-specific options *************************/\n\n"); + parse_file(stream); + printf("\n/* Sanity Checks *****************************************/\n\n"); + printf("/* The correct way to disable RR scheduling is to set the\n"); + printf(" * timeslice to zero.\n"); + printf(" */\n\n"); + printf("#ifndef CONFIG_RR_INTERVAL\n"); + printf("# define CONFIG_RR_INTERVAL 0\n"); + printf("#endif\n\n"); + printf("/* The correct way to disable filesystem supuport is to set the\n"); + printf(" * number of file descriptors to zero.\n"); + printf(" */\n\n"); + printf("#ifndef CONFIG_NFILE_DESCRIPTORS\n"); + printf("# define CONFIG_NFILE_DESCRIPTORS 0\n"); + printf("#endif\n\n"); + printf("/* If a console is selected, then make sure that there are\n"); + printf(" * resources for 3 file descriptors and, if any streams are\n"); + printf(" * selected, also for 3 file streams.\n"); + printf(" */\n\n"); + printf("#ifdef CONFIG_DEV_CONSOLE\n"); + printf("# if CONFIG_NFILE_DESCRIPTORS < 3\n"); + printf("# undef CONFIG_NFILE_DESCRIPTORS\n"); + printf("# define CONFIG_NFILE_DESCRIPTORS 3\n"); + printf("# endif\n\n"); + printf("# if CONFIG_NFILE_STREAMS > 0 && CONFIG_NFILE_STREAMS < 3\n"); + printf("# undef CONFIG_NFILE_STREAMS\n"); + printf("# define CONFIG_NFILE_STREAMS 3\n"); + printf("# endif\n"); + printf("#endif\n\n"); + printf("/* If no file descriptors are configured, then make certain no\n"); + printf(" * streams are configured either.\n"); + printf(" */\n\n"); + printf("#if CONFIG_NFILE_DESCRIPTORS == 0\n"); + printf("# undef CONFIG_NFILE_STREAMS\n"); + printf("# define CONFIG_NFILE_STREAMS 0\n"); + printf("#endif\n\n"); + printf("/* If no file streams are configured, then make certain that\n"); + printf(" * buffered I/O support is disabled.\n"); + printf(" */\n\n"); + printf("#if CONFIG_NFILE_STREAMS == 0\n"); + printf("# undef CONFIG_STDIO_BUFFER_SIZE\n"); + printf("# define CONFIG_STDIO_BUFFER_SIZE 0\n"); + printf("#endif\n\n"); + printf("/* Verbose debug only makes sense if debug is enabled */\n\n"); + printf("#ifndef CONFIG_DEBUG\n"); + printf("# undef CONFIG_DEBUG_VERBOSE\n"); + printf("#endif\n\n"); + printf("#endif /* __ARCH_CONFIG_H */\n"); + fclose(stream); + return 0; +} -- cgit v1.2.3