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Almost there on parsing.

This commit is contained in:
Simon Forman 2023-02-01 16:57:46 -08:00
parent 2f71db945a
commit 6694d3d596
1 changed files with 10 additions and 4 deletions
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14
implementations/C/parser.c
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@ -1,9 +1,11 @@
#include <stddef.h> #include <stddef.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <gc.h>
const char *BLANKS = " \t"; const char *BLANKS = " \t";
const char *TEXT = " hi there friend"; const char *TEXT = " hi there fr[ie]nd";
/* 01234567890123456789 /* 01234567890123456789
^ ^ ^ ^
*/ */
@ -22,15 +24,19 @@ trim_leading_blanks(char *str)
int int
main(void) main(void)
{ {
char *rest, *text; char *rest, *text, *snip;
ptrdiff_t diff; ptrdiff_t diff;
text = trim_leading_blanks((char *)TEXT); text = trim_leading_blanks((char *)TEXT);
rest = strpbrk(text, " []"); rest = strpbrk(text, " []");
while (NULL != rest) { while (NULL != rest) {
diff = rest - text; diff = rest - text;
text = rest;
printf("%ld\n", diff); printf("%ld\n", diff);
rest = strpbrk(++rest, " []"); snip = (char *)GC_malloc(diff + 1);
strncat(snip, text, diff);
printf("%s <%c>\n", snip, rest[0]);
text = ++rest;
rest = strpbrk(text, " []");
} }
printf("%s\n", text);
} }