ref: b3610440c27ad0b930290179daf1f18d5a675686
dir: /name.c/
#include <u.h> #include <libc.h> #include "pdf.h" /* 7.3.5 Name Objects */ Object * pdfname(Stream *stream) { Object *o; char *s, *r, hex[3]; int c, sz, maxsz; Sgetc(stream); /* skip '/' */ maxsz = 32; if((s = malloc(maxsz)) == nil) goto err; for(sz = 0;;){ if((c = Sgetc(stream)) < 0){ if(c == -1) break; goto err; } if(isws(c) || isdelim(c)){ Sungetc(stream); break; } if(c < '!' || c > '~'){ werrstr("invalid char %02x", c); goto err; } if(c == '#'){ if((c = Sgetc(stream)) < 0) goto err; hex[0] = c; if((c = Sgetc(stream)) < 0) goto err; hex[1] = c; if(dec16((uchar*)hex, 1, hex, 2) != 1){ werrstr("invalid hex"); goto err; } c = hex[0]; } if(sz+1 >= maxsz){ maxsz *= 2; if((r = realloc(s, maxsz)) == nil) goto err; s = r; } s[sz++] = c; } if((o = malloc(sizeof(*o))) != nil){ o->name = s; s[sz] = 0; o->type = Oname; return o; } err: werrstr("name: %r"); free(s); return nil; }