mirror of https://git.wuffs.org/MWCC
175 lines
3.9 KiB
C
175 lines
3.9 KiB
C
#include "parser.h"
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int my_tolower(char c) {
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if (c >= 'A' && c <= 'Z')
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return c | 0x20;
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else
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return c;
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}
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int my_isdigit(char c) {
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return (c >= '0' && c <= '9');
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}
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int my_isalpha(char c) {
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return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
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}
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int my_isalnum(char c) {
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return my_isdigit(c) || my_isalpha(c);
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}
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int my_isxdigit(char c) {
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return my_isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
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}
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char *Utils_SpellList(char *list, char *buffer, char opts) {
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char *sptr;
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char *eptr;
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char *nptr;
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char *bptr;
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int pflen;
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int npflen;
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int undo;
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char *neptr;
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int cnt;
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undo = 0;
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bptr = buffer;
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sptr = list;
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pflen = 0;
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while (sptr) {
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if ((opts & 1) && !pflen)
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*(bptr++) = *MAINOPTCHAR;
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eptr = strchr(sptr, '|');
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if (!eptr) {
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eptr = sptr + strlen(sptr);
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nptr = 0;
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} else if (eptr[1] == '|') {
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nptr = 0;
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} else {
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nptr = eptr + 1;
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}
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if (undo == 0 && !pflen) {
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if (opts & 8) {
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*(bptr++) = '[';
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*(bptr++) = 'n';
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*(bptr++) = 'o';
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*(bptr++) = ']';
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}
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if (opts & 0x20) {
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*(bptr++) = '[';
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*(bptr++) = 'n';
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*(bptr++) = 'o';
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*(bptr++) = '-';
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*(bptr++) = ']';
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}
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}
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npflen = 0;
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if (nptr) {
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while (sptr < nptr && *nptr && *nptr != '|' && sptr[npflen] == nptr[npflen])
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npflen++;
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if (npflen) {
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neptr = strchr(nptr, '|');
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if (!neptr)
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neptr = nptr + strlen(nptr);
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if ((neptr - nptr) < (eptr - sptr) || ((sptr[1] && sptr[1] != '|') ? (sptr[1] != nptr[1]) : 0))
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npflen = 0;
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if (opts & 0x40)
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npflen = 0;
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}
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}
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if (pflen) {
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sptr += pflen;
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while (sptr < eptr) {
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*(bptr++) = *(sptr++);
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}
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if (npflen > pflen) {
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*(bptr++) = '[';
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undo++;
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}
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if (npflen < pflen) {
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*(bptr++) = ']';
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undo--;
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}
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} else if (npflen) {
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for (cnt = npflen; cnt > 0; cnt--) {
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*(bptr++) = *(sptr++);
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}
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*(bptr++) = '[';
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undo++;
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}
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while (sptr < eptr) {
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*(bptr++) = *(sptr++);
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}
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if (opts & 0x10) {
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*(bptr++) = '[';
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*(bptr++) = '-';
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*(bptr++) = ']';
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}
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if (opts & 0x40) {
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*(bptr++) = '+';
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}
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sptr = nptr;
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if (nptr && bptr[-1] != '[') {
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if ((opts & 1) || (bptr[-1] == ']') || ((opts & 8) && !undo)) {
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*(bptr++) = ' ';
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*(bptr++) = '|';
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*(bptr++) = ' ';
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} else {
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*(bptr++) = '|';
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}
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}
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opts &= ~0x40;
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pflen = npflen;
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}
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for (cnt = undo; cnt; cnt--) {
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*(bptr++) = ']';
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}
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if (opts & 4)
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bptr += sprintf(bptr, "=...");
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*bptr = 0;
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return bptr;
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}
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int Utils_CompareOptionString(const char *a, const char *b, int cased, int sticky) {
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const char *ae;
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const char *be;
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for (ae = a; *ae && *ae != '|'; ae++) {}
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for (be = b; *be && *be != '|'; be++) {}
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if (sticky && (be - b) < (ae - a))
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return 0;
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if (cased) {
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while (a < ae && b < be) {
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if (*a != *b)
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break;
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a++;
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b++;
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}
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} else {
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while (a < ae && b < be) {
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if (my_tolower(*a) != my_tolower(*b))
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break;
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a++;
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b++;
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}
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}
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return (a == ae) && (sticky || b == be);
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}
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