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/*
* test-line-buffer.c: code to exercise the svn importer's input helper
*/
#include "git-compat-util.h"
#include "vcs-svn/line_buffer.h"
static uint32_t strtouint32(const char *s)
{
char *end;
uintmax_t n = strtoumax(s, &end, 10);
if (*s == '\0' || *end != '\0')
die("invalid count: %s", s);
return (uint32_t) n;
}
static void handle_command(const char *command, const char *arg, struct line_buffer *buf)
{
switch (*command) {
case 'c':
if (!prefixcmp(command, "copy ")) {
buffer_copy_bytes(buf, strtouint32(arg));
return;
}
case 'r':
if (!prefixcmp(command, "read ")) {
const char *s = buffer_read_string(buf, strtouint32(arg));
fputs(s, stdout);
return;
}
case 's':
if (!prefixcmp(command, "skip ")) {
buffer_skip_bytes(buf, strtouint32(arg));
return;
}
default:
die("unrecognized command: %s", command);
}
}
static void handle_line(const char *line, struct line_buffer *stdin_buf)
{
const char *arg = strchr(line, ' ');
if (!arg)
die("no argument in line: %s", line);
handle_command(line, arg + 1, stdin_buf);
}
int main(int argc, char *argv[])
{
struct line_buffer stdin_buf = LINE_BUFFER_INIT;
struct line_buffer file_buf = LINE_BUFFER_INIT;
struct line_buffer *input = &stdin_buf;
const char *filename;
char *s;
if (argc == 1)
filename = NULL;
else if (argc == 2)
filename = argv[1];
else
usage("test-line-buffer [file] < script");
if (buffer_init(&stdin_buf, NULL))
die_errno("open error");
if (filename) {
if (buffer_init(&file_buf, filename))
die_errno("error opening %s", filename);
input = &file_buf;
}
while ((s = buffer_read_line(&stdin_buf)))
handle_line(s, input);
if (filename && buffer_deinit(&file_buf))
die("error reading from %s", filename);
if (buffer_deinit(&stdin_buf))
die("input error");
if (ferror(stdout))
die("output error");
buffer_reset(&stdin_buf);
return 0;
}
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