1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272
|
/*
*
* tmain -- call a funtools main program as a subroutine
*
* saoconfig shmainlib
* make
* make shmainlib
* gcc -g -o tmain -I. -I./util tmain.c libfuntools.a -ldl -lm
*
* gcc -g -o tmain -I. -I./util tmain.c libfuntoolsMainLib.a libfuntools.a
* -ldl -lnsl -lsocket -lm
*
* gcc -g -o tmain -I. -I./util tmain.c libfuntoolsMainLib.a libtclfun.a \
* libfuntools.a /proj/rd/lib/libtcl8.4.so -ldl -lnsl -lsocket -lm
*
* ./tmain -s libfuntoolsMainLib.dylib $S "fundisp foo[circle(512,512,.1)]"
* or
* ./tmain -s libfuntoolsMainLib.so $S "fundisp foo[circle(512,512,.1)]"
* or
* ./tmain $S 'fundisp xxx[cir(512,512,.1)] | awk "NR>2{print $5}"'
*
*/
#define DYNAMIC 0
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>
#include <sys/mman.h>
#include <mainlib.h>
#include <file.h>
#define HAVE_TCL 0
extern char *optarg;
extern int optind;
#ifdef ANSI_FUNC
int
main (int argc, char **argv)
#else
main(argc, argv)
int argc;
char **argv;
#endif
{
int c;
int ip;
int len;
int got;
int args;
int prot;
int flags;
int domem=0;
char *buf=NULL;
char *buf2=NULL;
char *shobj=NULL;
char mode[SZ_LINE];
char tbuf[SZ_LINE];
char cmd[SZ_LINE];
char file[SZ_LINE];
char *ermsg;
char *extn;
char *iname;
char *ibuf;
char *s;
void *dl=NULL;
struct stat statbuf;
MainLib ml=NULL, ml2=NULL;
FILE *fp=NULL;
FILE *ifp=NULL, *ofp=NULL, *efp=NULL;
/* initialize */
*mode = '\0';
/* we want the args in the same order in which they arrived, and
gnu getopt sometimes changes things without this */
putenv("POSIXLY_CORRECT=true");
/* process switch arguments */
while ((c = getopt(argc, argv, "mi:e:o:s:t")) != -1){
switch(c){
case 'i':
if( !strcmp(optarg, "stdin") ){
ifp = stdin;
}
else{
if( !(ifp=fopen(optarg, "r")) ){
fprintf(stderr, "can't open '%s' for reading\n", optarg);
exit(1);
}
}
snprintf(tbuf, SZ_LINE, "stdin=%d", fileno(ifp));
if( *mode ) strncat(mode, ",", SZ_LINE);
strncat(mode, tbuf, SZ_LINE);
break;
case 'e':
if( !(efp=fopen(optarg, "w")) ){
fprintf(stderr, "can't open '%s' for writing\n", optarg);
exit(1);
}
snprintf(tbuf, SZ_LINE, "stderr=%d", fileno(efp));
if( *mode ) strncat(mode, ",", SZ_LINE);
strncat(mode, tbuf, SZ_LINE);
break;
case 'm':
domem=1;
break;
case 'o':
if( !strcmp(optarg, "stdout") ){
ofp = stdout;
}
else{
if( !(ofp=fopen(optarg, "w")) ){
fprintf(stderr, "can't open '%s' for writing\n", optarg);
exit(1);
}
}
snprintf(tbuf, SZ_LINE, "stdout=%d", fileno(ofp));
if( *mode ) strncat(mode, ",", SZ_LINE);
strncat(mode, tbuf, SZ_LINE);
break;
case 's':
shobj=optarg;
break;
case 't':
if( *mode ) strncat(mode, ",", SZ_LINE);
strncat(mode, "tcl=0", SZ_LINE);
break;
}
}
/* process required args */
args = argc - optind;
if( args < 2 ){
fprintf(stderr, "usage: %s file cmd\n", argv[0]);
exit(1);
}
iname = argv[optind+0];
ibuf = argv[optind+1];
/* read input file into memory */
if( domem ){
if( !(fp = fopen(iname, "r")) ){
fprintf(stderr, "can't open input file: %s\n", iname);
exit(1);
}
fstat(fileno(fp), &statbuf);
len = statbuf.st_size;
prot = PROT_READ;
flags = MAP_PRIVATE;
s = mmap(NULL, len, prot, flags, fileno(fp), 0);
fclose(fp);
if( !s ){
fprintf(stderr, "can't mmap input file: %s\n", iname);
exit(1);
}
}
else{
s = (char *)FileContents(iname, 0, &len);
if( !s ){
fprintf(stderr, "can't access input file: %s\n", iname);
exit(1);
}
}
#if DYNAMIC!=1
/* init routine is statically linked */
ml = (MainLib)funtoolsMainLibInit();
#endif
#if DYNAMIC!=0
/* load shared object and execute init routine */
switch( MainLibLoad("funtools", shobj, (void **)&ml2, &ermsg) ){
case -1:
fprintf(stderr, "can't load shared object %s (%s)\n", shobj, ermsg);
exit(1);
case -2:
fprintf(stderr, "can't init %s (%s)\n", "funtools", ermsg);
exit(1);
case -3:
fprintf(stderr, "invalid call to MainLibLoad (%s)\n", ermsg);
exit(1);
}
/* this is not always an error ( if we have the it linked statically) */
if( !ml2->mainlibprocess ){
fprintf(stderr, "no MainLibProcess routine found\n");
exit(1);
}
#endif
#if HAVE_TCL
/* initialize Tcl support */
MainLibInit_Tcl(ml);
#endif
/* parse command, file containing possible extension, and extra args */
ip = 0;
*cmd = '\0';
*file = '\0';
if( !word(ibuf, cmd, &ip) ){
fprintf(stderr, "requires a command (and usually a file)\n");
exit(1);
}
/* make up command containing memory-based buffer pointer as a filename */
if( word(ibuf, file, &ip) && *file ){
strncat(cmd, " ", SZ_LINE-1);
/* internal buffer pointer is passed as filename */
/* snprintf(tbuf, SZ_LINE, "\"buf:0x%p:%d", s, len); */
snprintf(tbuf, SZ_LINE, "\"buf:%#lx:%d", (long)s, len);
strncat(cmd, tbuf, SZ_LINE-1);
/* buffer pointer gets extension appended */
if( (extn = FileExtension(file)) && *extn ) strncat(cmd, extn, SZ_LINE-1);
strncat(cmd, "\"", SZ_LINE-1);
/* extra arguments */
strncat(cmd, " ", SZ_LINE-1);
strncat(cmd, &ibuf[ip], SZ_LINE-1);
}
/* call main as library routine */
fprintf(stderr, "executing: %s\n", cmd);
#if DYNAMIC == 1
got = ml2->mainlibprocess(ml2, cmd, &buf, mode);
#elif DYNAMIC == 2
got = MainLibProcess(ml, cmd, &buf, mode);
got = ml2->mainlibprocess(ml2, cmd, &buf2, mode);
#else
got = MainLibProcess(ml, cmd, &buf, mode);
#endif
/* handle result */
if( got < 0 ){
fprintf(stderr, "could not process cmd '%s'\n", cmd);
exit(1);
}
else if( got == 0 ){
fprintf(stderr, "no output from cmd '%s'\n", cmd);
}
else if( got > 1 ){
fprintf(stderr, "%s", buf);
if( buf2 ){
fprintf(stderr, "\n");
fprintf(stderr, "%s", buf2);
}
}
/* clean up */
if( extn ) xfree(extn);
if( buf ) xfree(buf);
if( s ){
if( domem ){
munmap(s, len);
}
else{
xfree(s);
}
}
/* close files */
if( ifp ) fclose(ifp);
if( ofp && (ofp != stdout) ) fclose(ofp);
/* close mainlib lists */
if( ml ) MainLibFree(ml);
if( ml2 ) MainLibFree(ml2);
/* success */
return 0;
}
|