Andrew's git - gitweb.git/blob

ec19b13ee23d0de5a2423941655452627d3d00cc
   1/*
   2 * test-line-buffer.c: code to exercise the svn importer's input helper
   3 */
   4
   5#include "git-compat-util.h"
   6#include "vcs-svn/line_buffer.h"
   7
   8static uint32_t strtouint32(const char *s)
   9{
  10        char *end;
  11        uintmax_t n = strtoumax(s, &end, 10);
  12        if (*s == '\0' || *end != '\0')
  13                die("invalid count: %s", s);
  14        return (uint32_t) n;
  15}
  16
  17static void handle_command(const char *command, const char *arg, struct line_buffer *buf)
  18{
  19        switch (*command) {
  20        case 'c':
  21                if (!prefixcmp(command, "copy ")) {
  22                        buffer_copy_bytes(buf, strtouint32(arg));
  23                        return;
  24                }
  25        case 'r':
  26                if (!prefixcmp(command, "read ")) {
  27                        const char *s = buffer_read_string(buf, strtouint32(arg));
  28                        fputs(s, stdout);
  29                        return;
  30                }
  31        case 's':
  32                if (!prefixcmp(command, "skip ")) {
  33                        buffer_skip_bytes(buf, strtouint32(arg));
  34                        return;
  35                }
  36        default:
  37                die("unrecognized command: %s", command);
  38        }
  39}
  40
  41static void handle_line(const char *line, struct line_buffer *stdin_buf)
  42{
  43        const char *arg = strchr(line, ' ');
  44        if (!arg)
  45                die("no argument in line: %s", line);
  46        handle_command(line, arg + 1, stdin_buf);
  47}
  48
  49int main(int argc, char *argv[])
  50{
  51        struct line_buffer stdin_buf = LINE_BUFFER_INIT;
  52        struct line_buffer file_buf = LINE_BUFFER_INIT;
  53        struct line_buffer *input = &stdin_buf;
  54        const char *filename;
  55        char *s;
  56
  57        if (argc == 1)
  58                filename = NULL;
  59        else if (argc == 2)
  60                filename = argv[1];
  61        else
  62                usage("test-line-buffer [file] < script");
  63
  64        if (buffer_init(&stdin_buf, NULL))
  65                die_errno("open error");
  66        if (filename) {
  67                if (buffer_init(&file_buf, filename))
  68                        die_errno("error opening %s", filename);
  69                input = &file_buf;
  70        }
  71
  72        while ((s = buffer_read_line(&stdin_buf)))
  73                handle_line(s, input);
  74
  75        if (filename && buffer_deinit(&file_buf))
  76                die("error reading from %s", filename);
  77        if (buffer_deinit(&stdin_buf))
  78                die("input error");
  79        if (ferror(stdout))
  80                die("output error");
  81        buffer_reset(&stdin_buf);
  82        return 0;
  83}