1.1 --- a/src/share/vm/runtime/os.cpp Mon Mar 28 12:48:08 2011 +0200
1.2 +++ b/src/share/vm/runtime/os.cpp Wed Mar 30 19:38:07 2011 +0400
1.3 @@ -1291,3 +1291,41 @@
1.4 }
1.5 return result;
1.6 }
1.7 +
1.8 +// Read file line by line, if line is longer than bsize,
1.9 +// skip rest of line.
1.10 +int os::get_line_chars(int fd, char* buf, const size_t bsize){
1.11 + size_t sz, i = 0;
1.12 +
1.13 + // read until EOF, EOL or buf is full
1.14 + while ((sz = (int) read(fd, &buf[i], 1)) == 1 && i < (bsize-1) && buf[i] != '\n') {
1.15 + ++i;
1.16 + }
1.17 +
1.18 + if (buf[i] == '\n') {
1.19 + // EOL reached so ignore EOL character and return
1.20 +
1.21 + buf[i] = 0;
1.22 + return (int) i;
1.23 + }
1.24 +
1.25 + buf[i+1] = 0;
1.26 +
1.27 + if (sz != 1) {
1.28 + // EOF reached. if we read chars before EOF return them and
1.29 + // return EOF on next call otherwise return EOF
1.30 +
1.31 + return (i == 0) ? -1 : (int) i;
1.32 + }
1.33 +
1.34 + // line is longer than size of buf, skip to EOL
1.35 + int ch;
1.36 + while (read(fd, &ch, 1) == 1 && ch != '\n') {
1.37 + // Do nothing
1.38 + }
1.39 +
1.40 + // return initial part of line that fits in buf.
1.41 + // If we reached EOF, it will be returned on next call.
1.42 +
1.43 + return (int) i;
1.44 +}
