93 lines
1.3 KiB
C
93 lines
1.3 KiB
C
#include "stdinc.h"
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#include "dat.h"
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#include "fns.h"
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int
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readifile(IFile *f, char *name)
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{
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ZBlock *b;
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b = readfile(name);
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if(b == nil)
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return -1;
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f->name = name;
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f->b = b;
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f->pos = 0;
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return 0;
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}
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void
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freeifile(IFile *f)
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{
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freezblock(f->b);
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f->b = nil;
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f->pos = 0;
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}
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int
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partifile(IFile *f, Part *part, u64int start, u32int size)
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{
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ZBlock *b;
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b = alloczblock(size, 0, part->blocksize);
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if(b == nil)
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return -1;
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if(readpart(part, start, b->data, size) < 0){
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seterr(EAdmin, "can't read %s: %r", part->name);
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freezblock(b);
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return -1;
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}
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f->name = part->name;
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f->b = b;
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f->pos = 0;
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return 0;
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}
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/*
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* return the next non-blank input line,
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* stripped of leading white space and with # comments eliminated
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*/
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char*
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ifileline(IFile *f)
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{
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char *s, *e, *t;
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int c;
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for(;;){
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s = (char*)&f->b->data[f->pos];
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e = memchr(s, '\n', f->b->len - f->pos);
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if(e == nil)
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return nil;
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*e++ = '\0';
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f->pos = e - (char*)f->b->data;
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t = strchr(s, '#');
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if(t != nil)
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*t = '\0';
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for(; c = *s; s++)
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if(c != ' ' && c != '\t' && c != '\r')
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return s;
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}
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}
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int
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ifilename(IFile *f, char *dst)
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{
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char *s;
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s = ifileline(f);
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if(s == nil || strlen(s) >= ANameSize)
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return -1;
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namecp(dst, s);
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return 0;
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}
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int
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ifileu32int(IFile *f, u32int *r)
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{
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char *s;
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s = ifileline(f);
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if(s == nil)
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return -1;
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return stru32int(s, r);
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}
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