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| | /*
Generate a random dump file in 'notmuch' format.
Generated message-id's and tags are intentionally nasty.
We restrict ourselves to 7 bit message-ids, because generating
random valid UTF-8 seems like work. And invalid UTF-8 can't be
round-tripped via Xapian.
*/
#include <stdlib.h>
#include <assert.h>
#include <talloc.h>
#include <string.h>
#include "math.h"
#include "hex-escape.h"
#include "command-line-arguments.h"
static void
hex_out (void *ctx, char *buf)
{
static char *encoded_buf = NULL;
static size_t encoded_buf_size = 0;
if (hex_encode (ctx, buf, &encoded_buf, &encoded_buf_size) != HEX_SUCCESS) {
fprintf (stderr, "Hex encoding failed");
exit (1);
}
fputs (encoded_buf, stdout);
}
static void
random_chars (char *buf, int from, int stop, int max_char,
const char *blacklist)
{
int i;
for (i = from; i < stop; i++) {
do {
buf[i] = ' ' + (random () % (max_char - ' '));
} while (blacklist && strchr (blacklist, buf[i]));
}
}
static void
random_tag (void *ctx, size_t len)
{
static char *buf = NULL;
static size_t buf_len = 0;
int use = (random () % (len - 1)) + 1;
if (len > buf_len) {
buf = talloc_realloc (ctx, buf, char, len);
buf_len = len;
}
random_chars (buf, 0, use, 255, NULL);
buf[use] = '\0';
hex_out (ctx, buf);
}
static void
random_message_id (void *ctx, size_t len)
{
static char *buf = NULL;
static size_t buf_len = 0;
int lhs_len = (random () % (len / 2 - 1)) + 1;
int rhs_len = (random () % len / 2) + 1;
const char *blacklist = "\n\r@<>[]()";
if (len > buf_len) {
buf = talloc_realloc (ctx, buf, char, len);
buf_len = len;
}
random_chars (buf, 0, lhs_len, 127, blacklist);
buf[lhs_len] = '@';
random_chars (buf, lhs_len + 1, lhs_len + rhs_len + 1, 127, blacklist);
hex_out (ctx, buf);
}
int
main (int argc, char **argv)
{
void *ctx = talloc_new (NULL);
int num_lines = 500;
int max_tags = 10;
int message_id_len = 100;
int tag_len = 50;
int seed = 734569;
int pad_tag = 0, pad_mid = 0;
notmuch_opt_desc_t options[] = {
{ NOTMUCH_OPT_INT, &num_lines, "num-lines", 'n', 0 },
{ NOTMUCH_OPT_INT, &max_tags, "max-tags", 'm', 0 },
{ NOTMUCH_OPT_INT, &message_id_len, "message-id-len", 'M', 0 },
{ NOTMUCH_OPT_INT, &tag_len, "tag-len", 't', 0 },
{ NOTMUCH_OPT_INT, &seed, "tag-len", 't', 0 },
{ 0, 0, 0, 0, 0 }
};
int opt_index = parse_arguments (argc, argv, options, 1);
if (opt_index < 0)
exit (1);
pad_mid = ((int) log10 (num_lines) + 1);
pad_tag = ((int) log10 (max_tags)) + 1;
srandom (seed);
int line;
for (line = 0; line < num_lines; line++) {
printf ("%0*d-", pad_mid, line);
random_message_id (ctx, message_id_len);
int num_tags = random () % (max_tags + 1);
int j;
for (j = 0; j < num_tags; j++) {
printf (" %0*d-", pad_tag, j);
random_tag (ctx, tag_len);
}
putchar ('\n');
}
talloc_free (ctx);
return 0;
}
|