191 lines
2.8 KiB
C
191 lines
2.8 KiB
C
/* make dependencies; Date: jan 07, 1986; Author: Erik Baalbergen */
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#include <stdio.h>
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#define BSIZ 1024
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char *progname;
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struct namelist {
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struct namelist *next;
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char *name;
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};
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struct namelist *freelist;
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struct namelist *new_namelist();
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struct namelist *nl = 0;
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int lflag = 0; /* produce vertical list of included files */
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char *Malloc(u)
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unsigned u;
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{
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char *sp, *malloc();
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if ((sp = malloc(u)) == 0) {
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fprintf(stderr, "%s: out of space\n");
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exit(1);
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}
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return sp;
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}
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struct namelist *
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new_namelist()
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{
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register struct namelist *nlp = freelist;
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if (nlp) {
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freelist = nlp->next;
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return nlp;
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}
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return (struct namelist *) Malloc(sizeof(struct namelist));
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}
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free_namelist(nlp)
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struct namelist *nlp;
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{
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if (nlp) {
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free_namelist(nlp->next);
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nlp->next = freelist;
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freelist = nlp;
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}
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}
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add_name(nm)
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char *nm;
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{
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struct namelist *nlp = nl;
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struct namelist *lnlp = 0;
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struct namelist *nnlp;
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char *strcpy();
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while (nlp) {
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register i = strcmp(nm, nlp->name);
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if (i < 0)
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break;
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if (i == 0) /* already present */
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return;
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lnlp = nlp;
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nlp = nlp->next;
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}
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(nnlp = new_namelist())->name = strcpy(Malloc(strlen(nm) + 1), nm);
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if (lnlp) {
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nnlp->next = lnlp->next;
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lnlp->next = nnlp;
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}
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else {
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nnlp->next = nl;
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nl = nnlp;
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}
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}
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print_namelist(nm, nlp)
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char *nm;
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struct namelist *nlp;
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{
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if (nlp) {
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if (lflag) {
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while (nlp) {
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printf("%s\n", nlp->name);
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nlp = nlp->next;
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}
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}
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else {
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printf("%s:", nm);
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while (nlp) {
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printf(" %s", nlp->name);
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nlp = nlp->next;
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}
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printf("\n");
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}
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}
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}
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main(argc, argv)
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char *argv[];
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{
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int err = 0;
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progname = *argv++;
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if (**argv == '-') {
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register char *s = *argv++;
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argc--;
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while (*++s) {
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switch (*s) {
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case 'l':
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lflag = 1;
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break;
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default:
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fprintf(stderr, "use: %s [-l] file ...\n",
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progname);
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return 0;
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}
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}
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}
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while (--argc > 0) {
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free_namelist(nl);
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nl = 0;
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if (dofile(*argv) == 0)
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++err;
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print_namelist(*argv++, nl);
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}
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return err ? 1 : 0;
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}
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dofile(fn)
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char *fn;
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{
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char *fgets(), buf[BSIZ];
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FILE *fp;
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char *nm, *include_line();
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if ((fp = fopen(fn, "r")) == 0) {
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fprintf(stderr, "%s: cannot read %s\n", progname, fn);
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return 0;
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}
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while (fgets(buf, BSIZ, fp) != NULL)
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if (nm = include_line(buf)) {
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add_name(nm);
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dofile(nm);
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}
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fclose(fp);
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return 1;
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}
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char *
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include_line(s)
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char *s;
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{
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while ((*s == '\t') || (*s == ' '))
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s++;
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if (*s++ == '#') {
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while ((*s == '\t') || (*s == ' '))
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s++;
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if (
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(*s++ == 'i') &&
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(*s++ == 'n') &&
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(*s++ == 'c') &&
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(*s++ == 'l') &&
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(*s++ == 'u') &&
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(*s++ == 'd') &&
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(*s++ == 'e')
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) {
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while ((*s == '\t') || (*s == ' '))
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s++;
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if (*s++ == '"') {
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register char *nm = s;
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while (*s != 0 && *s != '"')
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s++;
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*s = '\0';
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return nm;
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}
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}
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}
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return (char *) 0;
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}
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