diff options
Diffstat (limited to 'src/pgenmain.c')
| -rw-r--r-- | src/pgenmain.c | 164 |
1 files changed, 82 insertions, 82 deletions
diff --git a/src/pgenmain.c b/src/pgenmain.c index 80f6f2d..c1bd486 100644 --- a/src/pgenmain.c +++ b/src/pgenmain.c @@ -2,12 +2,12 @@ Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The Netherlands. - All Rights Reserved + All Rights Reserved -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in +both that copyright notice and this permission notice appear in supporting documentation, and that the names of Stichting Mathematisch Centrum or CWI not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. @@ -25,12 +25,12 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. /* Parser generator main program */ /* This expects a filename containing the grammar as argv[1] (UNIX) - or asks the console for such a file name (THINK C). - It writes its output on two files in the current directory: - - "graminit.c" gets the grammar as a bunch of initialized data - - "graminit.h" gets the grammar's non-terminals as #defines. - Error messages and status info during the generation process are - written to stdout, or sometimes to stderr. */ + or asks the console for such a file name (THINK C). + It writes its output on two files in the current directory: + - "graminit.c" gets the grammar as a bunch of initialized data + - "graminit.h" gets the grammar's non-terminals as #defines. + Error messages and status info during the generation process are + written to stdout, or sometimes to stderr. */ #include "pgenheaders.h" #include "grammar.h" @@ -49,100 +49,100 @@ char *askfile PROTO((void)); int main(argc, argv) - int argc; - char **argv; + int argc; + char **argv; { - grammar *g; - node *n; - FILE *fp; - char *filename; - + grammar *g; + node *n; + FILE *fp; + char *filename; + #ifdef THINK_C - filename = askfile(); + filename = askfile(); #else - if (argc != 2) { - fprintf(stderr, "usage: %s grammar\n", argv[0]); - exit(2); - } - filename = argv[1]; + if (argc != 2) { + fprintf(stderr, "usage: %s grammar\n", argv[0]); + exit(2); + } + filename = argv[1]; #endif - g = getgrammar(filename); - fp = fopen("graminit.c", "w"); - if (fp == NULL) { - perror("graminit.c"); - exit(1); - } - printf("Writing graminit.c ...\n"); - printgrammar(g, fp); - fclose(fp); - fp = fopen("graminit.h", "w"); - if (fp == NULL) { - perror("graminit.h"); - exit(1); - } - printf("Writing graminit.h ...\n"); - printnonterminals(g, fp); - fclose(fp); - exit(0); + g = getgrammar(filename); + fp = fopen("graminit.c", "w"); + if (fp == NULL) { + perror("graminit.c"); + exit(1); + } + printf("Writing graminit.c ...\n"); + printgrammar(g, fp); + fclose(fp); + fp = fopen("graminit.h", "w"); + if (fp == NULL) { + perror("graminit.h"); + exit(1); + } + printf("Writing graminit.h ...\n"); + printnonterminals(g, fp); + fclose(fp); + exit(0); } grammar * getgrammar(filename) - char *filename; + char *filename; { - FILE *fp; - node *n; - grammar *g0, *g; - - fp = fopen(filename, "r"); - if (fp == NULL) { - perror(filename); - exit(1); - } - g0 = meta_grammar(); - n = NULL; - parsefile(fp, filename, g0, g0->g_start, (char *)NULL, (char *)NULL, &n); - fclose(fp); - if (n == NULL) { - fprintf(stderr, "Parsing error.\n"); - exit(1); - } - g = pgen(n); - if (g == NULL) { - printf("Bad grammar.\n"); - exit(1); - } - return g; + FILE *fp; + node *n; + grammar *g0, *g; + + fp = fopen(filename, "r"); + if (fp == NULL) { + perror(filename); + exit(1); + } + g0 = meta_grammar(); + n = NULL; + parsefile(fp, filename, g0, g0->g_start, (char *)NULL, (char *)NULL, &n); + fclose(fp); + if (n == NULL) { + fprintf(stderr, "Parsing error.\n"); + exit(1); + } + g = pgen(n); + if (g == NULL) { + printf("Bad grammar.\n"); + exit(1); + } + return g; } #ifdef THINK_C char * askfile() { - char buf[256]; - static char name[256]; - printf("Input file name: "); - if (fgets(buf, sizeof buf, stdin) == NULL) { - printf("EOF\n"); - exit(1); - } - /* XXX The (unsigned char *) case is needed by THINK C 3.0 */ - if (sscanf(/*(unsigned char *)*/buf, " %s ", name) != 1) { - printf("No file\n"); - exit(1); - } - return name; + char buf[256]; + static char name[256]; + printf("Input file name: "); + if (fgets(buf, sizeof buf, stdin) == NULL) { + printf("EOF\n"); + exit(1); + } + /* XXX The (unsigned char *) case is needed by THINK C 3.0 */ + if (sscanf(/*(unsigned char *)*/buf, " %s ", name) != 1) { + printf("No file\n"); + exit(1); + } + return name; } #endif void fatal(msg) - char *msg; + char *msg; { - fprintf(stderr, "pgen: FATAL ERROR: %s\n", msg); - exit(1); + fprintf(stderr, "pgen: FATAL ERROR: %s\n", msg); + exit(1); } /* XXX TO DO: - - check for duplicate definitions of names (instead of fatal err) + - check for duplicate definitions of names (instead of fatal err) */ |