more constness for stralloc and buffer

CHANGES

@@ -23,6 +23,7 @@
     TCP_CORK (saves two syscalls)
   add io_fd_flags so the caller can tell io_fd whether the socket is blocking
     (saves one fcntl syscall)
+  more constness for stralloc and buffer
 
 0.29:
   save 8 bytes in taia.h for 64-bit systems

buffer.h

@@ -107,9 +107,9 @@ extern buffer *buffer_2;
 
 #ifdef STRALLOC_H
 /* write stralloc to buffer */
-int buffer_putsa(buffer* b,stralloc* sa);
+int buffer_putsa(buffer* b,const stralloc* sa);
 /* write stralloc to buffer and flush */
-int buffer_putsaflush(buffer* b,stralloc* sa);
+int buffer_putsaflush(buffer* b,const stralloc* sa);
 
 /* these "read token" functions return 0 if the token was complete or
  * EOF was hit or -1 on error.  In contrast to the non-stralloc token
@@ -141,7 +141,7 @@ int buffer_get_new_token_sa_pred(buffer* b,stralloc* sa,sa_predicate p);
 
 /* make a buffer from a stralloc.
  * Do not change the stralloc after this! */
-void buffer_fromsa(buffer* b,stralloc* sa);	/* read from sa */
+void buffer_fromsa(buffer* b,const stralloc* sa);	/* read from sa */
 int buffer_tosa(buffer*b,stralloc* sa);		/* write to sa, auto-growing it */
 #endif
 

buffer/buffer_fromsa.3

@@ -4,7 +4,7 @@ buffer_fromsa \- initialize buffer structure from stralloc
 .SH SYNTAX
 .B #include <buffer.h>
 
-void \fBbuffer_fromsa\fR(buffer* \fIb\fR,stralloc* \fIsa\fR);
+void \fBbuffer_fromsa\fR(buffer* \fIb\fR,const stralloc* \fIsa\fR);
 .SH DESCRIPTION
 buffer_fromsa makes a virtual read buffer from a stralloc.  The buffer
 reading functions will be able to read until the end of the data in the

buffer/buffer_fromsa.c

@@ -1,6 +1,6 @@
 #include "stralloc.h"
 #include "buffer.h"
 
-void buffer_fromsa(buffer* b,stralloc* sa) {
+void buffer_fromsa(buffer* b,const stralloc* sa) {
   buffer_frombuf(b,sa->s,sa->len);
 }

buffer/buffer_putsa.3

@@ -6,9 +6,9 @@ buffer_putsa \- write stralloc to buffer
 .B #include <stralloc.h>
 .B #include <buffer.h>
 
-int \fBbuffer_putsa\fP(buffer* \fIb\fR,stralloc* \fIx\fR);
+int \fBbuffer_putsa\fP(buffer* \fIb\fR,const stralloc* \fIx\fR);
 .SH DESCRIPTION
-buffer_putsa is equivalent to buffer_put(b,x.sa,x.len).
+buffer_putsa is equivalent to buffer_put(b,x.s,x.len).
 .SH "RETURN VALUE"
 0 if everything is fine, -1 on error (setting \fIerrno\fR).
 .SH "SEE ALSO"

buffer/buffer_putsa.c

@@ -1,6 +1,6 @@
 #include "stralloc.h"
 #include "buffer.h"
 
-int buffer_putsa(buffer* b,stralloc* sa) {
+int buffer_putsa(buffer* b,const stralloc* sa) {
   return buffer_put(b,sa->s,sa->len);
 }

buffer/buffer_putsaflush.3

@@ -6,9 +6,9 @@ buffer_putsa \- write stralloc to buffer and flush
 .B #include <stralloc.h>
 .B #include <buffer.h>
 
-int \fBbuffer_putsaflush\fP(buffer* \fIb\fR,const char* \fIx\fR);
+int \fBbuffer_putsaflush\fP(buffer* \fIb\fR,const stralloc* \fIx\fR);
 .SH DESCRIPTION
-buffer_putsaflush is equivalent to buffer_putflush(b,x.sa,x.len).
+buffer_putsaflush is equivalent to buffer_putflush(b,x.s,x.len).
 .SH "RETURN VALUE"
 0 if everything is fine, -1 on error (setting \fIerrno\fR).
 .SH "SEE ALSO"

buffer/buffer_putsaflush.c

@@ -1,6 +1,6 @@
 #include "stralloc.h"
 #include "buffer.h"
 
-int buffer_putsaflush(buffer* b,stralloc* sa) {
+int buffer_putsaflush(buffer* b,const stralloc* sa) {
   return buffer_putflush(b,sa->s,sa->len);
 }

stralloc.h

@@ -76,7 +76,7 @@ int stralloc_catm_internal(stralloc* sa,...);
 #define stralloc_copym(sa,...) (stralloc_zero(sa), stralloc_catm_internal(sa,__VA_ARGS__,(char*)0))
 
 /* stralloc_cat is analogous to stralloc_copy */
-int stralloc_cat(stralloc* sa,stralloc* in);
+int stralloc_cat(stralloc* sa,const stralloc* in);
 
 /* stralloc_append adds one byte in[0] to the end of the string stored
  * in sa. It is the same as stralloc_catb(&sa,in,1). */
@@ -129,9 +129,9 @@ int stralloc_chomp(stralloc* sa);
 
 #ifdef BUFFER_H
 /* write stralloc to buffer */
-int buffer_putsa(buffer* b,stralloc* sa);
+int buffer_putsa(buffer* b,const stralloc* sa);
 /* write stralloc to buffer and flush */
-int buffer_putsaflush(buffer* b,stralloc* sa);
+int buffer_putsaflush(buffer* b,const stralloc* sa);
 
 /* these "read token" functions return 1 for a complete token, 0 if
  * EOF was hit or -1 on error.  In contrast to the non-stralloc token
@@ -164,7 +164,7 @@ int buffer_get_new_token_sa_pred(buffer* b,stralloc* sa,sa_predicate p);
 
 /* make a buffer (for reading) from a stralloc.
  * Do not change the stralloc after this! */
-void buffer_fromsa(buffer* b,stralloc* sa);
+void buffer_fromsa(buffer* b,const stralloc* sa);
 int buffer_tosa(buffer*b,stralloc* sa);		/* write to sa, auto-growing it */
 #endif
 

stralloc/stralloc_cat.3

@@ -4,7 +4,7 @@ stralloc_cat \- append data to a stralloc
 .SH SYNTAX
 .B #include <stralloc.h>
 
-int \fBstralloc_cat\fP(stralloc* \fIsato\fR,stralloc* \fIsafrom\fR);
+int \fBstralloc_cat\fP(stralloc* \fIsato\fR,const stralloc* \fIsafrom\fR);
 .SH DESCRIPTION
 stralloc_cat appends the string stored in \fIsafrom\fR to \fIsa\fR. It
 is the same as

stralloc/stralloc_cat.c

@@ -1,7 +1,7 @@
 #include "stralloc.h"
 #include "str.h"
 
-extern int stralloc_cat(stralloc *sa,stralloc *sa2) {
+extern int stralloc_cat(stralloc *sa,const stralloc *sa2) {
   return stralloc_catb(sa,sa2->s,sa2->len);
 }