/*** $Id: text.h,v 1.12 2005/03/15 02:40:10 panweiguo Exp $ **** text.h: header file of text operations.**** Copyright (C) 2004 Feynman Software.*/#ifndef _MG_TEXT_H#define _MG_TEXT_H#ifdef __cplusplusextern "C"{#endif/* structure to represent a text string */typedef struct strbuffer_s{    unsigned char *string;     /* text string content */    int           txtlen;      /* text len or buffer used size */    int           blocksize;   /* block size, a block is an allocate unit */    int           buffsize;    /* buffer size */} StrBuffer;/* ------------------------- memory and struct alloc ------------------------ *//* text string content buffer allocation and free */#if 1  #define te_alloc                         malloc  #define te_free                          free  #define te_realloc(ptr, size, cpysize)   realloc(ptr, size)#else  #define te_alloc                         FixStrAlloc  #define te_free                          FixStrFreestatic inline void* te_realloc (void* ptr, size_t size, size_t cpysize){    void* newptr;    if ( !(newptr = FixStrAlloc (size)) )        return NULL;    memcpy (newptr, ptr, MIN(cpysize,size));    FixStrFree (ptr);    return newptr;}#endif/* -------------------------------------------------------------------------- *//* alloc with a unit of blocksize */static inline void*testr_alloc (StrBuffer *txtbuff, size_t len, size_t blocksize){    txtbuff->buffsize = (len + 1) + (blocksize - (len + 1)%blocksize);    txtbuff->string = te_alloc (txtbuff->buffsize);    txtbuff->blocksize = blocksize;    //txtbuff->txtlen = len;    return txtbuff->string;}static inline void*testr_realloc (StrBuffer *txtbuff, size_t len){    if (len + 1 > txtbuff->buffsize ||              len + 1 < txtbuff->buffsize - txtbuff->blocksize) {        //really realloc        size_t old_size;        old_size  = txtbuff->buffsize;        txtbuff->buffsize = (len + 1) + (txtbuff->blocksize -                             (len + 1)%txtbuff->blocksize);        txtbuff->string = te_realloc (txtbuff->string, txtbuff->buffsize, old_size);    }    return txtbuff->string;}static inline void testr_free (StrBuffer *txtbuff){    if (txtbuff) {        te_free (txtbuff->string);        //txtbuff->txtlen = 0;        //txtbuff->buffsize = 0;    }}static inline voidtestr_setstr (StrBuffer *txtbuff, const char *newstring, int len){    int datalen;    if (len < 0 && !newstring) return;    datalen = MIN(len, txtbuff->buffsize-1);    memcpy (txtbuff->string, newstring, datalen);    txtbuff->string[datalen] = '\0';    txtbuff->txtlen = datalen;}/* copy a string buffer */static inline StrBuffer* testr_copy (StrBuffer *des, StrBuffer *src){    if (!des || !src)        return NULL;    testr_free (des);    testr_alloc (des, src->txtlen, des->blocksize);    testr_setstr (des, (const char *)src->string, src->txtlen);    return des;}/* duplicates a string buffer */static inline StrBuffer* testr_dup (StrBuffer *s1){    StrBuffer *s2;    if (!s1)        return NULL;    s2 = malloc (sizeof(s1));    if (s2) {        testr_alloc (s2, s1->txtlen, s1->blocksize);        testr_setstr (s2, (const char *)s1->string, s1->txtlen);    }    return s2;}/* duplicates a string buffer */static inline StrBuffer* testr_dup2 (StrBuffer *s2, StrBuffer *s1){    if (!s1 || !s2)        return NULL;    testr_alloc (s2, s1->txtlen, s1->blocksize);    testr_setstr (s2, (const char *)s1->string, s1->txtlen);    return s2;}//FIXMEint GUIAPI GetLastMCharLen (PLOGFONT log_font, const char* mstr, int len);#define CHLENPREV(pStr, pIns) \        ( GetLastMCharLen (GetWindowFont(hWnd), (const char *)pStr, (const char *)pIns - (const char *)pStr) )#define CHLENNEXT(pIns, len) \        ( GetFirstMCharLen (GetWindowFont(hWnd), (const char *)pIns, len) )#ifdef __cplusplus}#endif  /* __cplusplus */#endif  /* _MG_TEXT_H */