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101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
#include <unistd.h>
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#include "textcode.h"
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#include "str.h"
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#include "buffer.h"
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#include "open.h"
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int main(int argc,char* argv[]) {
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char buf[4096];
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char obuf[4096];
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buffer filein;
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buffer fileout;
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int fd=0;
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int ofd=-1;
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int found=0;
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unsigned long mode=0,lineno=0;
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if (argc>1) {
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fd=open_read(argv[1]);
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if (fd<0) {
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buffer_puts(buffer_2,"error: could not open \"");
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buffer_puts(buffer_2,argv[1]);
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buffer_putsflush(buffer_2,"\"\n");
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return 1;
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}
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}
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buffer_init(&filein,read,fd,buf,sizeof buf);
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again:
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/* skip to "^begin " */
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for (;;) {
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char line[1000]; /* uuencoded lines can never be longer than 64 characters */
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int l;
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if ((l=buffer_getline(&filein,line,(sizeof line)-1))==0 && line[l]!='\n') {
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if (!found)
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buffer_putsflush(buffer_2,"warning: hit end of file without finding any uuencoded data!\n");
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return 0;
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}
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++lineno;
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if (l>0 && line[l-1]=='\r') --l; /* kill DOS line endings */
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line[l]=0;
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if (!str_diffn(line,"begin ",6)) {
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if (line[l=6+scan_8long(line+6,&mode)]==' ' && mode) {
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int i;
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++l;
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if (line[l]=='"') {
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int m;
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++l;
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line[str_chr(line+l,'"')]=0;
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}
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if (line[l+(i=str_rchr(line+l,'/'))]) l+=i+1;
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while (line[l]=='.') ++l;
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if (line[l]) {
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ofd=open_excl(line+l);
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if (ofd<0) {
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buffer_puts(buffer_2,"error: could not create file \"");
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buffer_puts(buffer_2,line+l);
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buffer_putsflush(buffer_2,"\" (must not exist yet)\n");
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} else {
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buffer_puts(buffer_2,"decoding file \"");
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buffer_puts(buffer_2,line+l);
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buffer_putsflush(buffer_2,"\"\n");
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break;
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}
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}
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}
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}
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}
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buffer_init(&fileout,write,ofd,obuf,sizeof obuf);
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/* read uuencoded lines */
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for (;;) {
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char line[1000]; /* uuencoded lines can never be longer than 64 characters */
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unsigned int scanned,x;
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char tmp[100];
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int l;
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if ((l=buffer_getline(&filein,line,(sizeof line)-1))==0) {
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buffer_putsflush(buffer_2,"warning: hit end of file without finding \"end\"!\n");
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return 0;
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}
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++lineno;
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if (l>0 && line[l-1]=='\r') --l; /* kill DOS line endings */
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line[l]=0;
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x=scan_uuencoded(line,tmp,&scanned);
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if (!x) {
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if (str_equal(line,"end")) {
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buffer_flush(&fileout);
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fchmod(ofd,mode);
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close(ofd);
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++found;
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goto again;
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} else {
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parseerror:
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buffer_puts(buffer_1,"parse error in line ");
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buffer_putulong(buffer_1,lineno);
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buffer_puts(buffer_1,": \"");
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buffer_puts(buffer_1,line);
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buffer_putsflush(buffer_1,"\"\n");
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exit(1);
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}
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}
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buffer_put(&fileout,tmp,scanned);
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}
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}
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