mirror of
https://github.com/reactos/reactos.git
synced 2024-05-16 10:11:53 +00:00
140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#ifndef max
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#endif
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int
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write_if_change(char* outbuf, char* filename)
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{
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FILE* out;
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unsigned int end;
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char* cmpbuf;
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unsigned int stat;
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out = fopen(filename, "rb");
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if (out == NULL)
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{
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out = fopen(filename, "wb");
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if (out == NULL)
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{
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fprintf(stderr, "Unable to create output file\n");
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return(1);
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}
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fputs(outbuf, out);
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fclose(out);
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return(0);
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}
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fseek(out, 0, SEEK_END);
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end = ftell(out);
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cmpbuf = malloc(end);
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if (cmpbuf == NULL)
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{
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fprintf(stderr, "Out of memory\n");
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fclose(out);
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return(1);
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}
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fseek(out, 0, SEEK_SET);
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stat = fread(cmpbuf, 1, end, out);
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if (stat != end)
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{
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fprintf(stderr, "Failed to read data\n");
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fclose(out);
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free(cmpbuf);
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return(1);
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}
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if (end == strlen(outbuf) && memcmp(cmpbuf, outbuf, end) == 0)
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{
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fclose(out);
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free(cmpbuf);
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return(0);
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}
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fclose(out);
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free(cmpbuf);
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out = fopen(filename, "wb");
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if (out == NULL)
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{
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fprintf(stderr, "Unable to create output file\n");
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return(1);
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}
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stat = fwrite(outbuf, 1, strlen(outbuf), out);
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if (strlen(outbuf) != stat)
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{
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fprintf(stderr, "Unable to write output file\n");
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fclose(out);
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return(1);
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}
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fclose(out);
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return(0);
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}
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int
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main(int argc, char* argv[])
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{
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int include_tests;
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unsigned int i;
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char* outbuf;
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char* s;
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char config[512];
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if (argc == 1)
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{
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fprintf(stderr, "Not enough arguments\n");
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return(1);
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}
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outbuf = malloc(256 * 1024);
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if (outbuf == NULL)
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{
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fprintf(stderr, "Out of memory 1\n");
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return(1);
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}
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s = outbuf;
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s = s + sprintf(s, "/* Automatically generated, ");
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s = s + sprintf(s, "Edit the Makefile to change configuration */\n");
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s = s + sprintf(s, "#ifndef __INCLUDE_CONFIG_H\n");
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s = s + sprintf(s, "#define __INCLUDE_CONFIG_H\n");
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strcpy(config, "");
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include_tests = 0;
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for (i = 2; i < argc; i++)
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{
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if (strcmp(argv[i], "REGTESTS") == 0)
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{
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include_tests = 1;
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}
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else
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{
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s = s + sprintf(s, "#ifndef %s\n", argv[i]);
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s = s + sprintf(s, "#define %s\n", argv[i]);
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s = s + sprintf(s, "#endif /* %s */\n", argv[i]);
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}
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strcat(config, argv[i]);
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if (i != (argc - 1))
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{
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strcat(config, " ");
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}
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}
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if (include_tests)
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{
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s = s + sprintf(s, "#ifndef __ASM__\n");
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s = s + sprintf(s, "extern void PrepareTests();\n");
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s = s + sprintf(s, "#define PREPARE_TESTS PrepareTests();\n");
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s = s + sprintf(s, "#endif /* __ASM__ */\n");
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}
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else
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{
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s = s + sprintf(s, "#define PREPARE_TESTS\n");
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}
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s = s + sprintf(s, "#define CONFIG \"%s\"\n", config);
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s = s + sprintf(s, "#endif /* __INCLUDE_CONFIG_H */\n");
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return(write_if_change(outbuf, argv[1]));
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}
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