xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

upas/marshal: deduplicate cistrcmp()/cistrncmp()/enc64()

Browse source 
use the libc versions of these routines avoiding
code duplication.
This commit is contained in:
cinap_lenrek 2015-03-12 17:23:56 +01:00
parent 6eba362810
commit 69af2676b0
1 changed files with 21 additions and 109 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

130
sys/src/cmd/upas/marshal/marshal.c
View file

@ -100,11 +100,8 @@ int pgppid = -1;
void Bdrain(Biobuf*);
void attachment(Attach*, Biobuf*);
void body(Biobuf*, Biobuf*, int);
int cistrcmp(char*, char*);
int cistrncmp(char*, char*, int);
int doublequote(Fmt*);
void* emalloc(int);
int enc64(char*, int, uchar*, int);
void* erealloc(void*, int);
char* estrdup(char*);
Addr* expand(int, char**);
@ -666,6 +663,26 @@ body(Biobuf *in, Biobuf *out, int docontenttype)
* a single line. This avoids short lines in the output which is pleasing
* but not necessary.
*/
static int
enc64x18(char *out, int lim, uchar *in, int n)
{
int m, mm, nn;
for(nn = 0; n > 0; n -= m, nn += mm){
m = 18 * 3;
if(m > n)
m = n;
nn++; /* \n */
assert(nn < lim);
mm = enc64(out, lim - nn, in, m);
assert(mm > 0);
in += m;
out += mm;
*out++ = '\n';
}
return nn;
}
void
body64(Biobuf *in, Biobuf *out)
{
@ -680,7 +697,7 @@ body64(Biobuf *in, Biobuf *out)
fatal("input error");
if(n == 0)
break;
m = enc64(obuf, sizeof(obuf), buf, n);
m = enc64x18(obuf, sizeof(obuf), buf, n);
if(Bwrite(out, obuf, m) < 0)
fatal("output error");
}
@ -1225,111 +1242,6 @@ waitforsubprocs(void)
return nil;
}
int
cistrncmp(char *a, char *b, int n)
{
while(n-- > 0)
if(tolower(*a++) != tolower(*b++))
return -1;
return 0;
}
int
cistrcmp(char *a, char *b)
{
for(;;){
if(tolower(*a) != tolower(*b++))
return -1;
if(*a++ == 0)
break;
}
return 0;
}
static uchar t64d[256];
static char t64e[64];
static void
init64(void)
{
int c, i;
memset(t64d, 255, 256);
memset(t64e, '=', 64);
i = 0;
for(c = 'A'; c <= 'Z'; c++){
t64e[i] = c;
t64d[c] = i++;
}
for(c = 'a'; c <= 'z'; c++){
t64e[i] = c;
t64d[c] = i++;
}
for(c = '0'; c <= '9'; c++){
t64e[i] = c;
t64d[c] = i++;
}
t64e[i] = '+';
t64d['+'] = i++;
t64e[i] = '/';
t64d['/'] = i;
}
int
enc64(char *out, int lim, uchar *in, int n)
{
int i;
ulong b24;
char *start = out;
char *e = out + lim;
if(t64e[0] == 0)
init64();
for(i = 0; i < n/3; i++){
b24 = (*in++)<<16;
b24 |= (*in++)<<8;
b24 |= *in++;
if(out + 5 >= e)
goto exhausted;
*out++ = t64e[(b24>>18)];
*out++ = t64e[(b24>>12)&0x3f];
*out++ = t64e[(b24>>6)&0x3f];
*out++ = t64e[(b24)&0x3f];
if((i%18) == 17)
*out++ = '\n';
}
switch(n%3){
case 2:
b24 = (*in++)<<16;
b24 |= (*in)<<8;
if(out + 4 >= e)
goto exhausted;
*out++ = t64e[(b24>>18)];
*out++ = t64e[(b24>>12)&0x3f];
*out++ = t64e[(b24>>6)&0x3f];
break;
case 1:
b24 = (*in)<<16;
if(out + 4 >= e)
goto exhausted;
*out++ = t64e[(b24>>18)];
*out++ = t64e[(b24>>12)&0x3f];
*out++ = '=';
break;
case 0:
if((i%18) != 0)
*out++ = '\n';
*out = 0;
return out - start;
}
exhausted:
*out++ = '=';
*out++ = '\n';
*out = 0;
return out - start;
}
void
freealias(Alias *a)
{