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New strbuf module

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git-svn-id: svn://svn.cc65.org/cc65/trunk@881 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2001-09-09 10:24:16 +00:00
parent 56b8ead112
commit 2485259a93
4 changed files with 297 additions and 1 deletions
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1
src/common/make/gcc.mak
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@ -20,6 +20,7 @@ OBJS = abend.o \
fname.o \
hashstr.o \
print.o \
strbuf.o \
strutil.o \
target.o \
tgttrans.o \

3
src/common/make/watcom.mak
View File

@ -76,6 +76,7 @@ OBJS = abend.obj \
fname.obj \
hashstr.obj \
print.obj \
strbuf.obj \
strutil.obj \
target.obj \
tgttrans.obj \
@ -102,7 +103,7 @@ clean:
@if exist *.obj del *.obj
@if exist $(LIB) del $(LIB)

193
src/common/strbuf.c Normal file
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@ -0,0 +1,193 @@
/*****************************************************************************/
/* */
/* strbuf.c */
/* */
/* Variable sized string buffers */
/* */
/* */
/* */
/* (C) 2001 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
/* common */
#include "xmalloc.h"
#include "strbuf.h"
/*****************************************************************************/
/* Helpers */
/*****************************************************************************/
static void SB_Realloc (StrBuf* B, unsigned NewSize)
/* Reallocate the string buffer space, make sure at least NewSize bytes are
* available.
*/
{
/* Get the current size, use a minimum of 8 bytes */
unsigned NewAllocated = B->Allocated;
if (NewAllocated == 0) {
NewAllocated = 8;
}
/* Round up to the next power of two */
while (NewAllocated < NewSize) {
NewAllocated *= 2;
}
/* Reallocate the buffer */
B->Buf = xrealloc (B->Buf, NewAllocated);
B->Allocated = NewAllocated;
}
/*****************************************************************************/
/* Code */
/*****************************************************************************/
StrBuf* InitStrBuf (StrBuf* B)
/* Initialize a string buffer */
{
B->Allocated = 0;
B->Len = 0;
B->Buf = 0;
return B;
}
void DoneStrBuf (StrBuf* B)
/* Free the data of a string buffer (but not the struct itself) */
{
xfree (B->Buf);
B->Allocated = 0;
B->Len = 0;
B->Buf = 0;
}
StrBuf* NewStrBuf (void)
/* Allocate, initialize and return a new StrBuf */
{
/* Allocate a new string buffer */
StrBuf* B = xmalloc (sizeof (StrBuf));
/* Initialize the struct... */
InitStrBuf (B);
/* ...and return it */
return B;
}
void FreeStrBuf (StrBuf* B)
/* Free a string buffer */
{
/* Don't use Done here, since we won't use the struct later */
xfree (B->Buf);
xfree (B);
}
void SB_Terminate (StrBuf* B)
/* Zero terminate the given string buffer. NOTE: The terminating zero is not
* accounted for in B->Len, if you want that, you have to use AppendChar!
*/
{
unsigned NewLen = B->Len + 1;
if (NewLen > B->Allocated) {
SB_Realloc (B, NewLen);
}
B->Buf[B->Len] = '\0';
}
void SB_AppendChar (StrBuf* B, char C)
/* Append a character to a string buffer */
{
unsigned NewLen = B->Len + 1;
if (NewLen > B->Allocated) {
SB_Realloc (B, NewLen);
}
B->Buf[B->Len] = C;
B->Len = NewLen;
}
void SB_AppendStr (StrBuf* B, const char* S)
/* Append a string to the end of the string buffer */
{
SB_AppendBuf (B, S, strlen (S));
}
void SB_AppendBuf (StrBuf* B, const char* S, unsigned Size)
/* Append a character buffer to the end of the string buffer */
{
unsigned NewLen = B->Len + Size;
if (NewLen > B->Allocated) {
SB_Realloc (B, NewLen);
}
memcpy (B->Buf + B->Len, S, Size);
B->Len = NewLen;
}
void SB_Copy (StrBuf* Target, const StrBuf* Source)
/* Copy Source to Target, discarding the old contents of Target */
{
if (Target->Allocated < Source->Allocated) {
SB_Realloc (Target, Source->Allocated);
}
memcpy (Target->Buf, Source->Buf, Source->Len);
Target->Len = Source->Len;
}
void SB_Append (StrBuf* Target, const StrBuf* Source)
/* Append the contents of Source to Target */
{
SB_AppendBuf (Target, Source->Buf, Source->Len);
}

101
src/common/strbuf.h Normal file
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@ -0,0 +1,101 @@
/*****************************************************************************/
/* */
/* strbuf.h */
/* */
/* Variable sized string buffers */
/* */
/* */
/* */
/* (C) 2001 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef STRBUF_H
#define STRBUF_H
/*****************************************************************************/
/* Data */
/*****************************************************************************/
typedef struct StrBuf StrBuf;
struct StrBuf {
unsigned Allocated;
unsigned Len;
char* Buf;
};
/*****************************************************************************/
/* Code */
/*****************************************************************************/
StrBuf* InitStrBuf (StrBuf* B);
/* Initialize a string buffer */
void DoneStrBuf (StrBuf* B);
/* Free the data of a string buffer (but not the struct itself) */
StrBuf* NewStrBuf (void);
/* Allocate, initialize and return a new StrBuf */
void FreeStrBuf (StrBuf* B);
/* Free a string buffer */
void SB_Terminate (StrBuf* B);
/* Zero terminate the given string buffer. NOTE: The terminating zero is not
* accounted for in B->Len, if you want that, you have to use AppendChar!
*/
void SB_AppendChar (StrBuf* B, char C);
/* Append a character to a string buffer */
void SB_AppendStr (StrBuf* B, const char* S);
/* Append a string to the end of the string buffer */
void SB_AppendBuf (StrBuf* B, const char* S, unsigned Size);
/* Append a character buffer to the end of the string buffer */
void SB_Copy (StrBuf* Target, const StrBuf* Source);
/* Copy Source to Target, discarding the old contents of Target */
void SB_Append (StrBuf* Target, const StrBuf* Source);
/* Append the contents of Source to Target */
/* End of strbuf.h */
#endif