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wine/dlls/msvcrt/printf.h

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/*
* Copyright 2011 Piotr Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef PRINTF_WIDE
#define APICHAR MSVCRT_wchar_t
#define CONVCHAR char
#define FUNC_NAME(func) func ## _w
#else
#define APICHAR char
#define CONVCHAR MSVCRT_wchar_t
#define FUNC_NAME(func) func ## _a
#endif
typedef struct FUNC_NAME(pf_flags_t)
{
APICHAR Sign, LeftAlign, Alternate, PadZero;
int FieldLength, Precision;
APICHAR IntegerLength, IntegerDouble;
APICHAR WideString;
APICHAR Format;
} FUNC_NAME(pf_flags);
struct FUNC_NAME(_str_ctx) {
MSVCRT_size_t len;
APICHAR *buf;
};
static int FUNC_NAME(puts_clbk_str)(void *ctx, int len, const APICHAR *str)
{
struct FUNC_NAME(_str_ctx) *out = ctx;
if(!out->buf)
return len;
if(out->len < len) {
memcpy(out->buf, str, out->len*sizeof(APICHAR));
out->buf += out->len;
out->len = 0;
return -1;
}
memcpy(out->buf, str, len*sizeof(APICHAR));
out->buf += len;
out->len -= len;
return len;
}
static inline const APICHAR* FUNC_NAME(pf_parse_int)(const APICHAR *fmt, int *val)
{
*val = 0;
while(isdigit(*fmt)) {
*val *= 10;
*val += *fmt++ - '0';
}
return fmt;
}
/* pf_fill: takes care of signs, alignment, zero and field padding */
static inline int FUNC_NAME(pf_fill)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
int len, FUNC_NAME(pf_flags) *flags, BOOL left)
{
int i, r = 0, written;
if(flags->Sign && !strchr("diaeEfgG", flags->Format))
flags->Sign = 0;
if(left && flags->Sign) {
flags->FieldLength--;
if(flags->PadZero)
r = pf_puts(puts_ctx, 1, &flags->Sign);
}
written = r;
if((!left && flags->LeftAlign) || (left && !flags->LeftAlign)) {
APICHAR ch;
if(left && flags->PadZero)
ch = '0';
else
ch = ' ';
for(i=0; i<flags->FieldLength-len && r>=0; i++) {
r = pf_puts(puts_ctx, 1, &ch);
written += r;
}
}
if(r>=0 && left && flags->Sign && !flags->PadZero) {
r = pf_puts(puts_ctx, 1, &flags->Sign);
written += r;
}
return r>=0 ? written : r;
}
static inline int FUNC_NAME(pf_output_wstr)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
const MSVCRT_wchar_t *str, int len, MSVCRT_pthreadlocinfo locinfo)
{
#ifdef PRINTF_WIDE
return pf_puts(puts_ctx, len, str);
#else
LPSTR out;
int len_a = WideCharToMultiByte(locinfo->lc_codepage, 0, str, len, NULL, 0, NULL, NULL);
out = HeapAlloc(GetProcessHeap(), 0, len_a);
if(!out)
return -1;
WideCharToMultiByte(locinfo->lc_codepage, 0, str, len, out, len_a, NULL, NULL);
len = pf_puts(puts_ctx, len_a, out);
HeapFree(GetProcessHeap(), 0, out);
return len;
#endif
}
static inline int FUNC_NAME(pf_output_str)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
const char *str, int len, MSVCRT_pthreadlocinfo locinfo)
{
#ifdef PRINTF_WIDE
LPWSTR out;
int len_w = MultiByteToWideChar(locinfo->lc_codepage, 0, str, len, NULL, 0);
out = HeapAlloc(GetProcessHeap(), 0, len_w*sizeof(WCHAR));
if(!out)
return -1;
MultiByteToWideChar(locinfo->lc_codepage, 0, str, len, out, len_w);
len = pf_puts(puts_ctx, len_w, out);
HeapFree(GetProcessHeap(), 0, out);
return len;
#else
return pf_puts(puts_ctx, len, str);
#endif
}
static inline int FUNC_NAME(pf_output_format_wstr)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
const MSVCRT_wchar_t *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
{
int r, ret;
if(len < 0)
len = strlenW(str);
if(flags->Precision>=0 && flags->Precision<len)
len = flags->Precision;
r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, TRUE);
ret = r;
if(r >= 0) {
r = FUNC_NAME(pf_output_wstr)(pf_puts, puts_ctx, str, len, locinfo);
ret += r;
}
if(r >= 0) {
r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, FALSE);
ret += r;
}
return r>=0 ? ret : r;
}
static inline int FUNC_NAME(pf_output_format_str)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
const char *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
{
int r, ret;
if(len < 0)
len = strlen(str);
if(flags->Precision>=0 && flags->Precision<len)
len = flags->Precision;
r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, TRUE);
ret = r;
if(r >= 0) {
r = FUNC_NAME(pf_output_str)(pf_puts, puts_ctx, str, len, locinfo);
ret += r;
}
if(r >= 0) {
r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, FALSE);
ret += r;
}
return r>=0 ? ret : r;
}
static inline int FUNC_NAME(pf_handle_string)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
const void *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
{
#ifdef PRINTF_WIDE
static const MSVCRT_wchar_t nullW[] = {'(','n','u','l','l',')',0};
if(!str)
return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, nullW, 6, flags, locinfo);
#else
if(!str)
return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, "(null)", 6, flags, locinfo);
#endif
if(flags->WideString || flags->IntegerLength=='l')
return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, str, len, flags, locinfo);
if(flags->IntegerLength == 'h')
return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, str, len, flags, locinfo);
if((flags->Format=='S' || flags->Format=='C') == (sizeof(APICHAR)==sizeof(MSVCRT_wchar_t)))
return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, str, len, flags, locinfo);
else
return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, str, len, flags, locinfo);
}
static inline void FUNC_NAME(pf_rebuild_format_string)(char *p, FUNC_NAME(pf_flags) *flags)
{
*p++ = '%';
if(flags->Alternate)
*p++ = flags->Alternate;
if(flags->Precision >= 0) {
sprintf(p, ".%d", flags->Precision);
p += strlen(p);
}
*p++ = flags->Format;
*p++ = 0;
}
/* pf_integer_conv: prints x to buf, including alternate formats and
additional precision digits, but not field characters or the sign */
static inline void FUNC_NAME(pf_integer_conv)(APICHAR *buf, int buf_len,
FUNC_NAME(pf_flags) *flags, LONGLONG x)
{
unsigned int base;
const char *digits;
int i, j, k;
if(flags->Format == 'o')
base = 8;
else if(flags->Format=='x' || flags->Format=='X')
base = 16;
else
base = 10;
if(flags->Format == 'X')
digits = "0123456789ABCDEFX";
else
digits = "0123456789abcdefx";
if(x<0 && (flags->Format=='d' || flags->Format=='i')) {
x = -x;
flags->Sign = '-';
}
i = 0;
if(x==0 && flags->Precision)
buf[i++] = '0';
else {
while(x != 0) {
j = (ULONGLONG)x%base;
x = (ULONGLONG)x/base;
buf[i++] = digits[j];
}
}
k = flags->Precision-i;
while(k-- > 0)
buf[i++] = '0';
if(flags->Alternate) {
if(base == 16) {
buf[i++] = digits[16];
buf[i++] = '0';
} else if(base==8 && buf[i-1]!='0')
buf[i++] = '0';
}
/* Adjust precision so pf_fill won't truncate the number later */
flags->Precision = i;
buf[i] = '\0';
j = 0;
while(--i > j) {
APICHAR tmp = buf[j];
buf[j] = buf[i];
buf[i] = tmp;
j++;
}
}
static inline void FUNC_NAME(pf_fixup_exponent)(char *buf)
{
char* tmp = buf;
while(tmp[0] && toupper(tmp[0])!='E')
tmp++;
if(tmp[0] && (tmp[1]=='+' || tmp[1]=='-') &&
isdigit(tmp[2]) && isdigit(tmp[3])) {
BOOL two_digit_exp = (_get_output_format() == MSVCRT__TWO_DIGIT_EXPONENT);
tmp += 2;
if(isdigit(tmp[2])) {
if(two_digit_exp && tmp[0]=='0') {
tmp[0] = tmp[1];
tmp[1] = tmp[2];
tmp[2] = tmp[3];
}
return; /* Exponent already 3 digits */
}else if(two_digit_exp) {
return;
}
tmp[3] = tmp[2];
tmp[2] = tmp[1];
tmp[1] = tmp[0];
tmp[0] = '0';
}
}
int FUNC_NAME(pf_printf)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx, const APICHAR *fmt,
MSVCRT__locale_t locale, BOOL positional_params, BOOL invoke_invalid_param_handler,
args_clbk pf_args, void *args_ctx, __ms_va_list *valist)
{
MSVCRT_pthreadlocinfo locinfo;
const APICHAR *q, *p = fmt;
APICHAR buf[32];
int written = 0, pos, i;
FUNC_NAME(pf_flags) flags;
TRACE("Format is: %s\n", FUNC_NAME(debugstr)(fmt));
if(!locale)
locinfo = get_locinfo();
else
locinfo = locale->locinfo;
while(*p) {
/* output characters before '%' */
for(q=p; *q && *q!='%'; q++);
if(p != q) {
i = pf_puts(puts_ctx, q-p, p);
if(i < 0)
return i;
written += i;
p = q;
continue;
}
/* *p == '%' here */
p++;
/* output a single '%' character */
if(*p == '%') {
i = pf_puts(puts_ctx, 1, p++);
if(i < 0)
return i;
written += i;
continue;
}
/* check parameter position */
if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &pos)) && *q=='$')
p = q+1;
else
pos = -1;
/* parse the flags */
memset(&flags, 0, sizeof(flags));
while(*p) {
if(*p=='+' || *p==' ') {
if(flags.Sign != '+')
flags.Sign = *p;
} else if(*p == '-')
flags.LeftAlign = *p;
else if(*p == '0')
flags.PadZero = *p;
else if(*p == '#')
flags.Alternate = *p;
else
break;
p++;
}
/* parse the widh */
if(*p == '*') {
p++;
if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &i)) && *q=='$')
p = q+1;
else
i = -1;
flags.FieldLength = pf_args(args_ctx, i, VT_INT, valist).get_int;
if(flags.FieldLength < 0) {
flags.LeftAlign = '-';
flags.FieldLength = -flags.FieldLength;
}
} else while(isdigit(*p)) {
flags.FieldLength *= 10;
flags.FieldLength += *p++ - '0';
}
/* parse the precision */
flags.Precision = -1;
if(*p == '.') {
flags.Precision = 0;
p++;
if(*p == '*') {
p++;
if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &i)) && *q=='$')
p = q+1;
else
i = -1;
flags.Precision = pf_args(args_ctx, i, VT_INT, valist).get_int;
} else while(isdigit(*p)) {
flags.Precision *= 10;
flags.Precision += *p++ - '0';
}
}
/* parse argument size modifier */
while(*p) {
if(*p=='l' && *(p+1)=='l') {
flags.IntegerDouble++;
p += 2;
} else if(*p=='h' || *p=='l' || *p=='L') {
flags.IntegerLength = *p;
p++;
} else if(*p == 'I') {
if(*(p+1)=='6' && *(p+2)=='4') {
flags.IntegerDouble++;
p += 3;
} else if(*(p+1)=='3' && *(p+2)=='2')
p += 3;
else if(isdigit(*(p+1)) || !*(p+1))
break;
else
p++;
} else if(*p == 'w')
flags.WideString = *p++;
else if(*p == 'F')
p++; /* ignore */
else
break;
}
flags.Format = *p;
if(flags.Format == 's' || flags.Format == 'S') {
i = FUNC_NAME(pf_handle_string)(pf_puts, puts_ctx,
pf_args(args_ctx, pos, VT_PTR, valist).get_ptr,
-1, &flags, locinfo);
} else if(flags.Format == 'c' || flags.Format == 'C') {
int ch = pf_args(args_ctx, pos, VT_INT, valist).get_int;
if((ch&0xff) != ch)
FIXME("multibyte characters printing not supported\n");
i = FUNC_NAME(pf_handle_string)(pf_puts, puts_ctx, &ch, 1, &flags, locinfo);
} else if(flags.Format == 'p') {
flags.Format = 'X';
flags.PadZero = '0';
i = flags.Precision;
flags.Precision = 2*sizeof(void*);
FUNC_NAME(pf_integer_conv)(buf, sizeof(buf)/sizeof(APICHAR), &flags,
(ULONG_PTR)pf_args(args_ctx, pos, VT_PTR, valist).get_ptr);
flags.PadZero = 0;
flags.Precision = i;
#ifdef PRINTF_WIDE
i = FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, buf, -1, &flags, locinfo);
#else
i = FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, buf, -1, &flags, locinfo);
#endif
} else if(flags.Format == 'n') {
int *used;
if(!n_format_enabled) {
MSVCRT_INVALID_PMT("\'n\' format specifier disabled", MSVCRT_EINVAL);
return -1;
}
used = pf_args(args_ctx, pos, VT_PTR, valist).get_ptr;
*used = written;
i = 0;
} else if(flags.Format && strchr("diouxX", flags.Format)) {
APICHAR *tmp = buf;
int max_len;
/* 0 padding is added after '0x' if Alternate flag is in use */
if((flags.Format=='x' || flags.Format=='X') && flags.PadZero && flags.Alternate
&& !flags.LeftAlign && flags.Precision<flags.FieldLength-2)
flags.Precision = flags.FieldLength - 2;
max_len = (flags.FieldLength>flags.Precision ? flags.FieldLength : flags.Precision) + 10;
if(max_len > sizeof(buf)/sizeof(APICHAR))
tmp = HeapAlloc(GetProcessHeap(), 0, max_len);
if(!tmp)
return -1;
if(flags.IntegerDouble)
FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, pf_args(args_ctx, pos,
VT_I8, valist).get_longlong);
else if(flags.Format=='d' || flags.Format=='i')
FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, flags.IntegerLength!='h' ?
pf_args(args_ctx, pos, VT_INT, valist).get_int :
(short)pf_args(args_ctx, pos, VT_INT, valist).get_int);
else
FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, flags.IntegerLength!='h' ?
(unsigned)pf_args(args_ctx, pos, VT_INT, valist).get_int :
(unsigned short)pf_args(args_ctx, pos, VT_INT, valist).get_int);
#ifdef PRINTF_WIDE
i = FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, tmp, -1, &flags, locinfo);
#else
i = FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, tmp, -1, &flags, locinfo);
#endif
if(tmp != buf)
HeapFree(GetProcessHeap(), 0, tmp);
} else if(flags.Format && strchr("aeEfgG", flags.Format)) {
char float_fmt[20], buf_a[32], *tmp = buf_a, *decimal_point;
int len = flags.Precision + 10;
double val = pf_args(args_ctx, pos, VT_R8, valist).get_double;
int r;
BOOL inf = FALSE, nan = FALSE;
if(isinf(val))
inf = TRUE;
else if(isnan(val))
nan = TRUE; /* FIXME: NaN value may be displayed as #IND or #QNAN */
if(inf || nan) {
if(nan || val<0)
flags.Sign = '-';
if(flags.Format=='g' || flags.Format=='G')
val = 1.1234; /* fraction will be overwritten with #INF or #IND string */
else
val = 1;
if(flags.Format=='a') {
if(flags.Precision==-1)
flags.Precision = 6; /* strlen("#INF00") */
}
}
if(flags.Format=='f') {
if(val>-10.0 && val<10.0)
i = 1;
else
i = 1 + log10(val<0 ? -val : val);
/* Default precision is 6, additional space for sign, separator and nullbyte is required */
i += (flags.Precision==-1 ? 6 : flags.Precision) + 3;
if(i > len)
len = i;
}
if(len > sizeof(buf_a))
tmp = HeapAlloc(GetProcessHeap(), 0, len);
if(!tmp)
return -1;
FUNC_NAME(pf_rebuild_format_string)(float_fmt, &flags);
if(val < 0) {
flags.Sign = '-';
val = -val;
}
sprintf(tmp, float_fmt, val);
if(toupper(flags.Format)=='E' || toupper(flags.Format)=='G')
FUNC_NAME(pf_fixup_exponent)(tmp);
decimal_point = strchr(tmp, '.');
if(decimal_point) {
*decimal_point = *locinfo->lconv->decimal_point;
if(inf || nan) {
static const char inf_str[] = "#INF";
static const char ind_str[] = "#IND";
for(i=1; i<(inf ? sizeof(inf_str) : sizeof(ind_str)); i++) {
if(decimal_point[i]<'0' || decimal_point[i]>'9')
break;
decimal_point[i] = inf ? inf_str[i-1] : ind_str[i-1];
}
if(i!=sizeof(inf_str) && i!=1)
decimal_point[i-1]++;
}
}
len = strlen(tmp);
i = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, &flags, TRUE);
if(i < 0)
return i;
r = FUNC_NAME(pf_output_str)(pf_puts, puts_ctx, tmp, len, locinfo);
if(r < 0)
return r;
i += r;
if(tmp != buf_a)
HeapFree(GetProcessHeap(), 0, tmp);
r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, &flags, FALSE);
if(r < 0)
return r;
i += r;
} else {
if(invoke_invalid_param_handler) {
MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
*MSVCRT__errno() = MSVCRT_EINVAL;
return -1;
}
continue;
}
if(i < 0)
return i;
written += i;
p++;
}
return written;
}
#ifndef PRINTF_WIDE
enum types_clbk_flags {
TYPE_CLBK_VA_LIST = 1,
TYPE_CLBK_POSITIONAL = 2,
TYPE_CLBK_ERROR_POS = 4,
TYPE_CLBK_ERROR_TYPE = 8
};
/* This functions stores types of arguments. It uses args[0] internally */
static printf_arg arg_clbk_type(void *ctx, int pos, int type, __ms_va_list *valist)
{
static const printf_arg ret;
printf_arg *args = ctx;
if(pos == -1) {
args[0].get_int |= TYPE_CLBK_VA_LIST;
return ret;
} else
args[0].get_int |= TYPE_CLBK_POSITIONAL;
if(pos<1 || pos>MSVCRT__ARGMAX)
args[0].get_int |= TYPE_CLBK_ERROR_POS;
else if(args[pos].get_int && args[pos].get_int!=type)
args[0].get_int |= TYPE_CLBK_ERROR_TYPE;
else
args[pos].get_int = type;
return ret;
}
#endif
static int FUNC_NAME(create_positional_ctx)(void *args_ctx, const APICHAR *format, __ms_va_list valist)
{
struct FUNC_NAME(_str_ctx) puts_ctx = {INT_MAX, NULL};
printf_arg *args = args_ctx;
int i, j;
i = FUNC_NAME(pf_printf)(FUNC_NAME(puts_clbk_str), &puts_ctx, format, NULL, TRUE, FALSE,
arg_clbk_type, args_ctx, NULL);
if(i < 0)
return i;
if(args[0].get_int==0 || args[0].get_int==TYPE_CLBK_VA_LIST)
return 0;
if(args[0].get_int != TYPE_CLBK_POSITIONAL)
return -1;
for(i=MSVCRT__ARGMAX; i>0; i--)
if(args[i].get_int)
break;
for(j=1; j<=i; j++) {
switch(args[j].get_int) {
case VT_I8:
args[j].get_longlong = va_arg(valist, LONGLONG);
break;
case VT_INT:
args[j].get_int = va_arg(valist, int);
break;
case VT_R8:
args[j].get_double = va_arg(valist, double);
break;
case VT_PTR:
args[j].get_ptr = va_arg(valist, void*);
break;
default:
return -1;
}
}
return j;
}
#undef APICHAR
#undef CONVCHAR
#undef FUNC_NAME
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