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smarter uudecode

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This commit is contained in:
leitner 2002-05-15 00:17:15 +00:00
parent c536d87493
commit 22d76deac6
1 changed files with 51 additions and 29 deletions
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80
test/uudecode.c
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@ -12,6 +12,9 @@ int main(int argc,char* argv[]) {
int fd=0;
int ofd=-1;
int found=0;
char line[1000]; /* uuencoded lines can never be longer than 64 characters */
int l;
enum { BEFOREBEGIN, AFTERBEGIN, SKIPHEADER } state=BEFOREBEGIN;
unsigned long mode=0,lineno=0;
if (argc>1) {
fd=open_read(argv[1]);
@ -26,9 +29,18 @@ int main(int argc,char* argv[]) {
again:
/* skip to "^begin " */
for (;;) {
char line[1000]; /* uuencoded lines can never be longer than 64 characters */
int l;
if ((l=buffer_getline(&filein,line,(sizeof line)-1))==0 && line[l]!='\n') {
if (state!=BEFOREBEGIN) {
buffer_puts(buffer_1,"premature end of file in line ");
buffer_putulong(buffer_1,lineno);
buffer_putsflush(buffer_1,"!\n");
if (ofd>=0) {
buffer_flush(&fileout);
fchmod(ofd,mode);
close(ofd);
}
++found;
}
if (!found)
buffer_putsflush(buffer_2,"warning: hit end of file without finding any uuencoded data!\n");
return 0;
@ -36,7 +48,19 @@ again:
++lineno;
if (l>0 && line[l-1]=='\r') --l; /* kill DOS line endings */
line[l]=0;
if (!str_diffn(line,"begin ",6)) {
if (str_start(line,"begin ")) {
if (state!=BEFOREBEGIN) {
buffer_puts(buffer_1,"new begin without previous end in line ");
buffer_putulong(buffer_1,lineno);
buffer_putsflush(buffer_1,"!\n");
if (ofd>=0) {
buffer_flush(&fileout);
fchmod(ofd,mode);
close(ofd);
}
++found;
}
state=BEFOREBEGIN;
if (line[l=6+scan_8long(line+6,&mode)]==' ' && mode) {
int i;
++l;
@ -57,44 +81,42 @@ again:
buffer_puts(buffer_2,"decoding file \"");
buffer_puts(buffer_2,line+l);
buffer_putsflush(buffer_2,"\"\n");
break;
state=AFTERBEGIN;
buffer_init(&fileout,write,ofd,obuf,sizeof obuf);
continue;
}
}
}
}
}
buffer_init(&fileout,write,ofd,obuf,sizeof obuf);
/* read uuencoded lines */
for (;;) {
char line[1000]; /* uuencoded lines can never be longer than 64 characters */
unsigned int scanned,x;
char tmp[100];
int l;
if ((l=buffer_getline(&filein,line,(sizeof line)-1))==0) {
buffer_putsflush(buffer_2,"warning: hit end of file without finding \"end\"!\n");
return 0;
}
++lineno;
if (l>0 && line[l-1]=='\r') --l; /* kill DOS line endings */
line[l]=0;
x=scan_uuencoded(line,tmp,&scanned);
if (!x) {
if (str_equal(line,"end")) {
} else if (str_equal(line,"end")) {
if (ofd>=0) {
buffer_flush(&fileout);
fchmod(ofd,mode);
close(ofd);
++found;
goto again;
} else {
parseerror:
ofd=-1;
}
++found;
state=BEFOREBEGIN;
continue;
} else if (!line[0]) {
if (state==AFTERBEGIN)
state=SKIPHEADER;
} else {
unsigned int scanned,x;
char tmp[100];
x=scan_uuencoded(line,tmp,&scanned);
if (!x) {
if (state==AFTERBEGIN) {
buffer_puts(buffer_1,"parse error in line ");
buffer_putulong(buffer_1,lineno);
buffer_puts(buffer_1,": \"");
buffer_puts(buffer_1,line);
buffer_putsflush(buffer_1,"\"\n");
exit(1);
return 1;
}
} else {
if (ofd>=0)
buffer_put(&fileout,tmp,scanned);
}
}
buffer_put(&fileout,tmp,scanned);
}
}