321 lines
8.1 KiB
C
321 lines
8.1 KiB
C
/* utility.c Utility functions for Wine
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* Author: acb
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* Commenced: 10-9-1993
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*
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* This unit contains the implementations of
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* various Windows API functions that perform
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* utility tasks; i.e., that do not fit into
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* any major category but perform useful tasks.
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include "windows.h"
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static char Copyright[] = "Copyright Andrew C. Bulhak, 1993";
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/*#define debug_utility*/
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/* MulDiv is a simple function that may as well have been
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* implemented as a macro; however Microsoft, in their infinite
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* wisdom, have implemented it as a DLL function and therefore
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* so should we.
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* Basically, it takes two 16-bit integers, multiplies them
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* and divides by a third integer.
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*/
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int MulDiv(int foo, int bar, int baz)
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{
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return (long)(((int)foo*bar)/baz);
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};
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/* UTILITY_strip015() removes \015 (^M, CR) from a string;
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* this is done to convert a MS-DOS-style string to a more
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* UNIX-friendly format. Replacement is done in-place.
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*/
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void UTILITY_strip015(char *dest) {
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char *src = dest;
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while(*src) {
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while(*src == '\015') src++; /* Skip \015s */
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while((*src) && (*src != '\015')) *(dest++) = *(src++);
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};
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*dest = '\0'; /* Add null terminator */
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};
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/*
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* OutputDebugString strips CRs from its (string) parameter and
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* calls DebugPrintString(), which was written by someone else.
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* Since this is part of the standard Windows API, it needs no
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* references to nonstandard DLLs.
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*/
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void OutputDebugString(LPSTR foo)
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{
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UTILITY_strip015(foo);
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DebugPrintString(foo);
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};
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/* UTILITY_qualify(source, dest) takes the format string source and
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* changes all the parameters to correspond to Linux integer sizes
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* rather than Windows sizes. For example, it converts %i to %hi
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* and %lx to %x. No array size checking is done at present.
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*/
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static void UTILITY_qualify(const char *source, char *dest)
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{
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#ifdef debug_utility
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printf("UTILITY_qualify(\"%s\", \"%s\");\n", source, dest);
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#endif
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if(!source) return; /* Dumbass attack! */
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while(*source) {
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/* Find next format code. */
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while((*source != '%') && (*source)) {
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*(dest++) = *(source++);
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}
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/* Yeah, I know I shouldn't use gotos.... */
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if (!(*source)) goto loop_end;
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/* skip the '%' */
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*(dest++) = *(source++);
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/* Now insert a size qualifier, if needed. */
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switch(*source) {
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case 'i':
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case 'd':
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case 'x':
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case 'X':
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case 'u':
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case 'o':
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/* We have a 16-bit value here. */
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*(dest++) = 'h';
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break;
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};
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/* Here we go 'round the mulberry bush... */
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loop_end:
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};
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*dest = '\0';
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};
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/* UTILITY_argsize() evaluates the size of the argument list that
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* accompanies a vsprintf() or wvsprintf() call.
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* Arguments:
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* char *format; printf-style format string.
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* BOOL windows; if this is TRUE, we assume that ints are
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* 16 bits in size; otherwise we deal with
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* 32-bit variables.
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* Returns:
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* size (in bytes) of the arguments that follow the call.
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*/
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size_t UTILITY_argsize(const char *format, BOOL windows)
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{
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size_t size = 0;
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#define INT_SIZE (windows ? 2 : 4)
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while(*format) {
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while((*format) && (*format != '%')) format++; /* skip ahead */
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if(*format) {
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char modifier = ' ';
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#ifdef debug_utility
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printf("found:\t\"%%");
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#endif
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format++; /* skip past '%' */
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/* First skip the flags, field width, etc. */
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/* First the flags */
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if ((*format == '#') || (*format == '-') || (*format == '+')
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|| (*format == ' ')) {
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#ifdef debug_utility
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printf("%c", *format);
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#endif
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format++;
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}
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/* Now the field width, etc. */
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while(isdigit(*format)) {
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#ifdef debug_utility
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printf("%c", *format);
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#endif
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format++;
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}
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if(*format == '.') {
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#ifdef debug_utility
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printf("%c", *format);
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#endif
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format++;
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}
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while(isdigit(*format)) {
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#ifdef debug_utility
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printf("%c", *format);
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#endif
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format++;
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}
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/* Now we handle the rest */
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if((*format == 'h') || (*format == 'l') || (*format == 'L')) {
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#ifdef debug_utility
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printf("%c", modifier);
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#endif
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modifier = *(format++);
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}
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/* Handle the actual type. */
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#ifdef debug_utility
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printf("%c\"\n", *format);
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#endif
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switch(*format) {
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case 'd':
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case 'i':
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case 'o':
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case 'x':
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case 'X':
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case 'u':
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case 'c':
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size += ((modifier == 'l') ? 4 : INT_SIZE);
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break;
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case 's': size += sizeof(char *); break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G':
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/* It doesn't look as if Windows' wvsprintf()
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supports floating-point arguments. However,
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I'll leave this code here just in case. */
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size += (modifier == 'L') ? sizeof(long double) : sizeof(double);
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break;
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case 'p': size += sizeof(void *); break;
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case 'n': size += sizeof(int *); break;
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};
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};
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};
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#undef INT_SIZE
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#ifdef debug_utility
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printf("UTILITY_argsize: returning %i\n", size);
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#endif
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return size;
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};
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/* UTILITY_convertArgs() creates a 32-bit argument list from a 16-bit list.
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* This is used to allow wvsprintf() arguments to be fed through
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* vsprintf().
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*
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* Arguments:
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* char *fmt; format string
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* char *winarg; Windows-style arguments
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*
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* Returns:
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* malloc()ed pointer to new argument list. This should
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* be free()d as soon as it is finished with.
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*/
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char *UTILITY_convertArgs(char *format, char *winarg)
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{
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char *result = (char *)malloc(UTILITY_argsize(format, 0));
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char *rptr = result;
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while(*format) {
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while((*format) && (*format != '%')) format++; /* skip ahead */
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if(*format) {
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char modifier = ' ';
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#ifdef debug_utility
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printf("found:\t\"%%");
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#endif
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format++; /* skip past '%' */
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/* First skip the flags, field width, etc. */
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/* First the flags */
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if ((*format == '#') || (*format == '-') || (*format == '+')
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|| (*format == ' ')) format++;
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/* Now the field width, etc. */
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while(isdigit(*format)) format++;
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if(*format == '.') format++;
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while(isdigit(*format)) format++;
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/* Now we handle the rest */
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if((*format == 'h') || (*format == 'l') || (*format == 'L'))
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modifier = *(format++);
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/* Handle the actual type. */
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#ifdef debug_utility
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printf("%c\"\n", *format);
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#endif
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switch(*format) {
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case 'd':
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case 'i':
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*(((int *)rptr)++) = (modifier=='l') ? *(((int *)winarg)++) : *(((short *)winarg)++);
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break;
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case 'o':
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case 'x':
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case 'X':
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case 'u':
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case 'c':
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*(((unsigned int *)rptr)++) = (modifier=='l') ? *(((unsigned int *)winarg)++)
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: *(((unsigned short *)winarg)++);
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break;
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case 's':
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case 'p':
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case 'n': /* A pointer, is a pointer, is a pointer... */
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*(((char **)rptr)++) = *(((char **)winarg)++);
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G':
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/* It doesn't look as if Windows' wvsprintf()
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supports floating-point arguments. However,
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I'll leave this code here just in case. */
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if(modifier=='L')
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*(((long double *)rptr)++) = *(((long double *)winarg)++);
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else *(((double *)rptr)++) = *(((double *)winarg)++);
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break;
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}
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}
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}
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return result;
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};
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/**************************************************************************
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* wsprintf [USER.420]
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*/
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int wsprintf(LPSTR lpOutput, LPSTR lpFormat, ...)
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{
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va_list valist;
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int ArgCnt;
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va_start(valist, lpFormat);
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ArgCnt = vsprintf(lpOutput, lpFormat, valist);
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va_end(valist);
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return (ArgCnt);
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}
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/* wvsprintf() is an implementation of vsprintf(). This
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* implementation converts the arguments to 32-bit integers and
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* calls the standard library function vsprintf().
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*
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* Known shortcomings:
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* wvsprintf() doesn't yet convert the arguments back after
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* calling vsprintf(), so if Windows implements %n and a
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* program depends on it, we're in trouble.
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*/
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int wvsprintf(LPSTR buf, LPSTR format, LPSTR args)
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{
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char qualified_fmt[1536];
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char *newargs;
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int result;
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/* 1.5K is a safe value as wvsprintf can only handle buffers up to
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1K and in a worst case such a buffer would look like "%i%i%i..." */
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if(!buf || !format) return 0;
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/* Change the format string so that ints are handled as short by
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default */
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UTILITY_qualify(format, qualified_fmt);
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/* Convert agruments to 32-bit values */
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newargs = UTILITY_convertArgs(format, args);
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result = vsprintf(buf, qualified_fmt, newargs);
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free(newargs);
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return result;
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};
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