51 lines
921 B
C
51 lines
921 B
C
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/*
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** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
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** distribution information.
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*/
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/*
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** $Id$
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*/
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#include "rfc2045.h"
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#include <ctype.h>
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struct rfc2045findstruct {
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const char *partnum;
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struct rfc2045 *ptr;
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} ;
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static void do_decode(struct rfc2045 *p, struct rfc2045id *id, void *ptr)
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{
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struct rfc2045findstruct *fs=(struct rfc2045findstruct *)ptr;
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const char *partnum=fs->partnum;
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unsigned n;
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while (id)
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{
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if (!isdigit((int)(unsigned char)*partnum)) return;
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n=0;
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while (isdigit((int)(unsigned char)*partnum))
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n=n*10 + *partnum++ - '0';
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if (*partnum)
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{
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if (*partnum != '.') return;
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++partnum;
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}
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if (n != (unsigned)id->idnum) return;
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id=id->next;
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}
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if ( *partnum == '\0') fs->ptr=p;
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}
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struct rfc2045 *rfc2045_find(struct rfc2045 *p, const char *str)
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{
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struct rfc2045findstruct fs;
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fs.partnum=str;
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fs.ptr=0;
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rfc2045_decode(p, &do_decode, &fs);
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return (fs.ptr);
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}
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