> Have you looked at the code?
Busybox source is currently on another machine, so it is a bit difficult
to look in. Seems you are doing a line buffer approach. I'm not familar
with libbb functions, but ther seems to be a function xmalloc_fgets ...
that should be the right one. Do something like the following ...
// if skipping of empty lines at the start is required, we need a flag
got_data = 0;
// process all data of a single block in one loop
while ( (line = xmalloc_fgets(file)) != NULL) {
len = strlen(line);
// omit next line if xmalloc_fgets strips ´\n´
if (len > 0 && line[len-1] == '\n') line[--len] = '\0';
// strip of optional '\r'
if (len > 0 && line[len-1] == '\r') line[--len] = '\0';
// check for empty line seqence
if (len == 0) {
// skip empty lines before data block (if required)
if (got_data == 0) continue;
// you got an empty line --> this is your end of data processing
best to do a return from function here
}
// remember we got data
got_data = 1;
// else you got a data line and have to process the lines data
(single line)
process your data here
}
// you get here on EOF of the pipe this may or may not be an error
// depending on specification
either end data processing or signal error
Best to put the complete loop for each block of data in a single function.
If required, you can put the fgets including stripping of \n and \r in
seperate function this makes things easier.
int readline( file_t file, char** line )
{
int l;
char* p = xmalloc_fgets(file);
if (p == NULL) return -1;
l = strlen(p);
if (l>0 && p[l-1] == '\n') p[--l] = '\0';
if (l>0 && p[l-1] == '\r') p[--l] = '\0';
*line = p;
return l;
}
int len;
char* line;
while ( (len = readline(file,line)) > 0 ) {
if (len == 0) {
you got an empty line
}
process data of line
}
EOF or read error
But please have a look, if something similar is already in libbb, else
the above readline function may be a libbb candidate.
This will hopefully help ...
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