ref: d9591a54d23e99daa351ed8a76b0a8c3bcf2690a
dir: /sys/src/libString/s_parse.c/
#include <u.h> #include <libc.h> #include "String.h" #define isspace(c) ((c)==' ' || (c)=='\t' || (c)=='\n') /* Get the next field from a String. The field is delimited by white space, * single or double quotes. */ String * s_parse(String *from, String *to) { if (*from->ptr == '\0') return 0; if (to == 0) to = s_new(); if (*from->ptr == '\'') { from->ptr++; for (;*from->ptr != '\'' && *from->ptr != '\0'; from->ptr++) s_putc(to, *from->ptr); if (*from->ptr == '\'') from->ptr++; } else if (*from->ptr == '"') { from->ptr++; for (;*from->ptr != '"' && *from->ptr != '\0'; from->ptr++) s_putc(to, *from->ptr); if (*from->ptr == '"') from->ptr++; } else { for (;!isspace(*from->ptr) && *from->ptr != '\0'; from->ptr++) s_putc(to, *from->ptr); } s_terminate(to); /* crunch trailing white */ while(isspace(*from->ptr)) from->ptr++; return to; }