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patch 8.1.0765: string format of a Blob can't be parsed back

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Problem:    String format of a Blob can't be parsed back.
Solution:   Use 0z format.
This commit is contained in:
Bram Moolenaar
2019-01-17 16:32:53 +01:00
parent 6e0b6a0bec
commit 4131fd5509
4 changed files with 32 additions and 24 deletions
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37
src/blob.c
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@@ -168,7 +168,7 @@ write_blob(FILE *fd, blob_T *blob)
}
/*
* Convert a blob to a readable form: "[0x11,0x34]"
* Convert a blob to a readable form: "0z00112233.44556677.8899"
*/
char_u *
blob2string(blob_T *blob, char_u **tofree, char_u *numbuf)
@@ -179,20 +179,19 @@ blob2string(blob_T *blob, char_u **tofree, char_u *numbuf)
if (blob == NULL)
{
*tofree = NULL;
return (char_u *)"[]";
return (char_u *)"0z";
}
// Store bytes in the growarray.
ga_init2(&ga, 1, 4000);
ga_append(&ga, '[');
ga_concat(&ga, (char_u *)"0z");
for (i = 0; i < blob_len(blob); i++)
{
if (i > 0)
ga_concat(&ga, (char_u *)",");
vim_snprintf((char *)numbuf, NUMBUFLEN, "0x%02X", (int)blob_get(blob, i));
if (i > 0 && (i & 3) == 0)
ga_concat(&ga, (char_u *)".");
vim_snprintf((char *)numbuf, NUMBUFLEN, "%02X", (int)blob_get(blob, i));
ga_concat(&ga, numbuf);
}
ga_append(&ga, ']');
*tofree = ga.ga_data;
return *tofree;
}
@@ -207,24 +206,20 @@ string2blob(char_u *str)
blob_T *blob = blob_alloc();
char_u *s = str;
if (*s != '[')
if (s[0] != '0' || (s[1] != 'z' && s[1] != 'Z'))
goto failed;
s = skipwhite(s + 1);
while (*s != ']')
s += 2;
while (vim_isxdigit(*s))
{
if (s[0] != '0' || s[1] != 'x'
|| !vim_isxdigit(s[2]) || !vim_isxdigit(s[3]))
goto failed;
ga_append(&blob->bv_ga, (hex2nr(s[2]) << 4) + hex2nr(s[3]));
s += 4;
if (*s == ',')
s = skipwhite(s + 1);
else if (*s != ']')
if (!vim_isxdigit(s[1]))
goto failed;
ga_append(&blob->bv_ga, (hex2nr(s[0]) << 4) + hex2nr(s[1]));
s += 2;
if (*s == '.' && vim_isxdigit(s[1]))
++s;
}
s = skipwhite(s + 1);
if (*s != NUL)
goto failed; // text after final ']'
if (*skipwhite(s) != NUL)
goto failed; // text after final digit
++blob->bv_refcount;
return blob;