| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1999 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. |
| * |
| * This software is licensed as described in the file COPYING, which |
| * you should have received as part of this distribution. The terms |
| * are also available at https://curl.haxx.se/docs/copyright.html. |
| * |
| * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| * copies of the Software, and permit persons to whom the Software is |
| * furnished to do so, under the terms of the COPYING file. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| * |
| * Purpose: |
| * A merge of Bjorn Reese's format() function and Daniel's dsprintf() |
| * 1.0. A full blooded printf() clone with full support for <num>$ |
| * everywhere (parameters, widths and precisions) including variabled |
| * sized parameters (like doubles, long longs, long doubles and even |
| * void * in 64-bit architectures). |
| * |
| * Current restrictions: |
| * - Max 128 parameters |
| * - No 'long double' support. |
| * |
| * If you ever want truly portable and good *printf() clones, the project that |
| * took on from here is named 'Trio' and you find more details on the trio web |
| * page at https://daniel.haxx.se/projects/trio/ |
| */ |
| |
| #include "curl_setup.h" |
| #include <curl/mprintf.h> |
| |
| #include "curl_memory.h" |
| /* The last #include file should be: */ |
| #include "memdebug.h" |
| |
| /* |
| * If SIZEOF_SIZE_T has not been defined, default to the size of long. |
| */ |
| |
| #ifdef HAVE_LONGLONG |
| # define LONG_LONG_TYPE long long |
| # define HAVE_LONG_LONG_TYPE |
| #else |
| # if defined(_MSC_VER) && (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64) |
| # define LONG_LONG_TYPE __int64 |
| # define HAVE_LONG_LONG_TYPE |
| # else |
| # undef LONG_LONG_TYPE |
| # undef HAVE_LONG_LONG_TYPE |
| # endif |
| #endif |
| |
| /* |
| * Non-ANSI integer extensions |
| */ |
| |
| #if (defined(__BORLANDC__) && (__BORLANDC__ >= 0x520)) || \ |
| (defined(__WATCOMC__) && defined(__386__)) || \ |
| (defined(__POCC__) && defined(_MSC_VER)) || \ |
| (defined(_WIN32_WCE)) || \ |
| (defined(__MINGW32__)) || \ |
| (defined(_MSC_VER) && (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)) |
| # define MP_HAVE_INT_EXTENSIONS |
| #endif |
| |
| /* |
| * Max integer data types that mprintf.c is capable |
| */ |
| |
| #ifdef HAVE_LONG_LONG_TYPE |
| # define mp_intmax_t LONG_LONG_TYPE |
| # define mp_uintmax_t unsigned LONG_LONG_TYPE |
| #else |
| # define mp_intmax_t long |
| # define mp_uintmax_t unsigned long |
| #endif |
| |
| #define BUFFSIZE 326 /* buffer for long-to-str and float-to-str calcs, should |
| fit negative DBL_MAX (317 letters) */ |
| #define MAX_PARAMETERS 128 /* lame static limit */ |
| |
| #ifdef __AMIGA__ |
| # undef FORMAT_INT |
| #endif |
| |
| /* Lower-case digits. */ |
| static const char lower_digits[] = "0123456789abcdefghijklmnopqrstuvwxyz"; |
| |
| /* Upper-case digits. */ |
| static const char upper_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
| |
| #define OUTCHAR(x) \ |
| do{ \ |
| if(stream((unsigned char)(x), (FILE *)data) != -1) \ |
| done++; \ |
| else \ |
| return done; /* return immediately on failure */ \ |
| } while(0) |
| |
| /* Data type to read from the arglist */ |
| typedef enum { |
| FORMAT_UNKNOWN = 0, |
| FORMAT_STRING, |
| FORMAT_PTR, |
| FORMAT_INT, |
| FORMAT_INTPTR, |
| FORMAT_LONG, |
| FORMAT_LONGLONG, |
| FORMAT_DOUBLE, |
| FORMAT_LONGDOUBLE, |
| FORMAT_WIDTH /* For internal use */ |
| } FormatType; |
| |
| /* conversion and display flags */ |
| enum { |
| FLAGS_NEW = 0, |
| FLAGS_SPACE = 1<<0, |
| FLAGS_SHOWSIGN = 1<<1, |
| FLAGS_LEFT = 1<<2, |
| FLAGS_ALT = 1<<3, |
| FLAGS_SHORT = 1<<4, |
| FLAGS_LONG = 1<<5, |
| FLAGS_LONGLONG = 1<<6, |
| FLAGS_LONGDOUBLE = 1<<7, |
| FLAGS_PAD_NIL = 1<<8, |
| FLAGS_UNSIGNED = 1<<9, |
| FLAGS_OCTAL = 1<<10, |
| FLAGS_HEX = 1<<11, |
| FLAGS_UPPER = 1<<12, |
| FLAGS_WIDTH = 1<<13, /* '*' or '*<num>$' used */ |
| FLAGS_WIDTHPARAM = 1<<14, /* width PARAMETER was specified */ |
| FLAGS_PREC = 1<<15, /* precision was specified */ |
| FLAGS_PRECPARAM = 1<<16, /* precision PARAMETER was specified */ |
| FLAGS_CHAR = 1<<17, /* %c story */ |
| FLAGS_FLOATE = 1<<18, /* %e or %E */ |
| FLAGS_FLOATG = 1<<19 /* %g or %G */ |
| }; |
| |
| typedef struct { |
| FormatType type; |
| int flags; |
| long width; /* width OR width parameter number */ |
| long precision; /* precision OR precision parameter number */ |
| union { |
| char *str; |
| void *ptr; |
| union { |
| mp_intmax_t as_signed; |
| mp_uintmax_t as_unsigned; |
| } num; |
| double dnum; |
| } data; |
| } va_stack_t; |
| |
| struct nsprintf { |
| char *buffer; |
| size_t length; |
| size_t max; |
| }; |
| |
| struct asprintf { |
| char *buffer; /* allocated buffer */ |
| size_t len; /* length of string */ |
| size_t alloc; /* length of alloc */ |
| int fail; /* (!= 0) if an alloc has failed and thus |
| the output is not the complete data */ |
| }; |
| |
| static long dprintf_DollarString(char *input, char **end) |
| { |
| int number = 0; |
| while(ISDIGIT(*input)) { |
| number *= 10; |
| number += *input-'0'; |
| input++; |
| } |
| if(number && ('$'==*input++)) { |
| *end = input; |
| return number; |
| } |
| return 0; |
| } |
| |
| static bool dprintf_IsQualifierNoDollar(const char *fmt) |
| { |
| #if defined(MP_HAVE_INT_EXTENSIONS) |
| if(!strncmp(fmt, "I32", 3) || !strncmp(fmt, "I64", 3)) { |
| return TRUE; |
| } |
| #endif |
| |
| switch(*fmt) { |
| case '-': case '+': case ' ': case '#': case '.': |
| case '0': case '1': case '2': case '3': case '4': |
| case '5': case '6': case '7': case '8': case '9': |
| case 'h': case 'l': case 'L': case 'z': case 'q': |
| case '*': case 'O': |
| #if defined(MP_HAVE_INT_EXTENSIONS) |
| case 'I': |
| #endif |
| return TRUE; |
| |
| default: |
| return FALSE; |
| } |
| } |
| |
| /****************************************************************** |
| * |
| * Pass 1: |
| * Create an index with the type of each parameter entry and its |
| * value (may vary in size) |
| * |
| * Returns zero on success. |
| * |
| ******************************************************************/ |
| |
| static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos, |
| va_list arglist) |
| { |
| char *fmt = (char *)format; |
| int param_num = 0; |
| long this_param; |
| long width; |
| long precision; |
| int flags; |
| long max_param = 0; |
| long i; |
| |
| while(*fmt) { |
| if(*fmt++ == '%') { |
| if(*fmt == '%') { |
| fmt++; |
| continue; /* while */ |
| } |
| |
| flags = FLAGS_NEW; |
| |
| /* Handle the positional case (N$) */ |
| |
| param_num++; |
| |
| this_param = dprintf_DollarString(fmt, &fmt); |
| if(0 == this_param) |
| /* we got no positional, get the next counter */ |
| this_param = param_num; |
| |
| if(this_param > max_param) |
| max_param = this_param; |
| |
| /* |
| * The parameter with number 'i' should be used. Next, we need |
| * to get SIZE and TYPE of the parameter. Add the information |
| * to our array. |
| */ |
| |
| width = 0; |
| precision = 0; |
| |
| /* Handle the flags */ |
| |
| while(dprintf_IsQualifierNoDollar(fmt)) { |
| #if defined(MP_HAVE_INT_EXTENSIONS) |
| if(!strncmp(fmt, "I32", 3)) { |
| flags |= FLAGS_LONG; |
| fmt += 3; |
| } |
| else if(!strncmp(fmt, "I64", 3)) { |
| flags |= FLAGS_LONGLONG; |
| fmt += 3; |
| } |
| else |
| #endif |
| |
| switch(*fmt++) { |
| case ' ': |
| flags |= FLAGS_SPACE; |
| break; |
| case '+': |
| flags |= FLAGS_SHOWSIGN; |
| break; |
| case '-': |
| flags |= FLAGS_LEFT; |
| flags &= ~FLAGS_PAD_NIL; |
| break; |
| case '#': |
| flags |= FLAGS_ALT; |
| break; |
| case '.': |
| if('*' == *fmt) { |
| /* The precision is picked from a specified parameter */ |
| |
| flags |= FLAGS_PRECPARAM; |
| fmt++; |
| param_num++; |
| |
| i = dprintf_DollarString(fmt, &fmt); |
| if(i) |
| precision = i; |
| else |
| precision = param_num; |
| |
| if(precision > max_param) |
| max_param = precision; |
| } |
| else { |
| flags |= FLAGS_PREC; |
| precision = strtol(fmt, &fmt, 10); |
| } |
| break; |
| case 'h': |
| flags |= FLAGS_SHORT; |
| break; |
| #if defined(MP_HAVE_INT_EXTENSIONS) |
| case 'I': |
| #if (SIZEOF_CURL_OFF_T > SIZEOF_LONG) |
| flags |= FLAGS_LONGLONG; |
| #else |
| flags |= FLAGS_LONG; |
| #endif |
| break; |
| #endif |
| case 'l': |
| if(flags & FLAGS_LONG) |
| flags |= FLAGS_LONGLONG; |
| else |
| flags |= FLAGS_LONG; |
| break; |
| case 'L': |
| flags |= FLAGS_LONGDOUBLE; |
| break; |
| case 'q': |
| flags |= FLAGS_LONGLONG; |
| break; |
| case 'z': |
| /* the code below generates a warning if -Wunreachable-code is |
| used */ |
| #if (SIZEOF_SIZE_T > SIZEOF_LONG) |
| flags |= FLAGS_LONGLONG; |
| #else |
| flags |= FLAGS_LONG; |
| #endif |
| break; |
| case 'O': |
| #if (SIZEOF_CURL_OFF_T > SIZEOF_LONG) |
| flags |= FLAGS_LONGLONG; |
| #else |
| flags |= FLAGS_LONG; |
| #endif |
| break; |
| case '0': |
| if(!(flags & FLAGS_LEFT)) |
| flags |= FLAGS_PAD_NIL; |
| /* FALLTHROUGH */ |
| case '1': case '2': case '3': case '4': |
| case '5': case '6': case '7': case '8': case '9': |
| flags |= FLAGS_WIDTH; |
| width = strtol(fmt-1, &fmt, 10); |
| break; |
| case '*': /* Special case */ |
| flags |= FLAGS_WIDTHPARAM; |
| param_num++; |
| |
| i = dprintf_DollarString(fmt, &fmt); |
| if(i) |
| width = i; |
| else |
| width = param_num; |
| if(width > max_param) |
| max_param = width; |
| break; |
| default: |
| break; |
| } |
| } /* switch */ |
| |
| /* Handle the specifier */ |
| |
| i = this_param - 1; |
| |
| if((i < 0) || (i >= MAX_PARAMETERS)) |
| /* out of allowed range */ |
| return 1; |
| |
| switch (*fmt) { |
| case 'S': |
| flags |= FLAGS_ALT; |
| /* FALLTHROUGH */ |
| case 's': |
| vto[i].type = FORMAT_STRING; |
| break; |
| case 'n': |
| vto[i].type = FORMAT_INTPTR; |
| break; |
| case 'p': |
| vto[i].type = FORMAT_PTR; |
| break; |
| case 'd': case 'i': |
| vto[i].type = FORMAT_INT; |
| break; |
| case 'u': |
| vto[i].type = FORMAT_INT; |
| flags |= FLAGS_UNSIGNED; |
| break; |
| case 'o': |
| vto[i].type = FORMAT_INT; |
| flags |= FLAGS_OCTAL; |
| break; |
| case 'x': |
| vto[i].type = FORMAT_INT; |
| flags |= FLAGS_HEX|FLAGS_UNSIGNED; |
| break; |
| case 'X': |
| vto[i].type = FORMAT_INT; |
| flags |= FLAGS_HEX|FLAGS_UPPER|FLAGS_UNSIGNED; |
| break; |
| case 'c': |
| vto[i].type = FORMAT_INT; |
| flags |= FLAGS_CHAR; |
| break; |
| case 'f': |
| vto[i].type = FORMAT_DOUBLE; |
| break; |
| case 'e': |
| vto[i].type = FORMAT_DOUBLE; |
| flags |= FLAGS_FLOATE; |
| break; |
| case 'E': |
| vto[i].type = FORMAT_DOUBLE; |
| flags |= FLAGS_FLOATE|FLAGS_UPPER; |
| break; |
| case 'g': |
| vto[i].type = FORMAT_DOUBLE; |
| flags |= FLAGS_FLOATG; |
| break; |
| case 'G': |
| vto[i].type = FORMAT_DOUBLE; |
| flags |= FLAGS_FLOATG|FLAGS_UPPER; |
| break; |
| default: |
| vto[i].type = FORMAT_UNKNOWN; |
| break; |
| } /* switch */ |
| |
| vto[i].flags = flags; |
| vto[i].width = width; |
| vto[i].precision = precision; |
| |
| if(flags & FLAGS_WIDTHPARAM) { |
| /* we have the width specified from a parameter, so we make that |
| parameter's info setup properly */ |
| long k = width - 1; |
| vto[i].width = k; |
| vto[k].type = FORMAT_WIDTH; |
| vto[k].flags = FLAGS_NEW; |
| /* can't use width or precision of width! */ |
| vto[k].width = 0; |
| vto[k].precision = 0; |
| } |
| if(flags & FLAGS_PRECPARAM) { |
| /* we have the precision specified from a parameter, so we make that |
| parameter's info setup properly */ |
| long k = precision - 1; |
| vto[i].precision = k; |
| vto[k].type = FORMAT_WIDTH; |
| vto[k].flags = FLAGS_NEW; |
| /* can't use width or precision of width! */ |
| vto[k].width = 0; |
| vto[k].precision = 0; |
| } |
| *endpos++ = fmt + 1; /* end of this sequence */ |
| } |
| } |
| |
| /* Read the arg list parameters into our data list */ |
| for(i = 0; i<max_param; i++) { |
| /* Width/precision arguments must be read before the main argument |
| they are attached to */ |
| if(vto[i].flags & FLAGS_WIDTHPARAM) { |
| vto[vto[i].width].data.num.as_signed = |
| (mp_intmax_t)va_arg(arglist, int); |
| } |
| if(vto[i].flags & FLAGS_PRECPARAM) { |
| vto[vto[i].precision].data.num.as_signed = |
| (mp_intmax_t)va_arg(arglist, int); |
| } |
| |
| switch(vto[i].type) { |
| case FORMAT_STRING: |
| vto[i].data.str = va_arg(arglist, char *); |
| break; |
| |
| case FORMAT_INTPTR: |
| case FORMAT_UNKNOWN: |
| case FORMAT_PTR: |
| vto[i].data.ptr = va_arg(arglist, void *); |
| break; |
| |
| case FORMAT_INT: |
| #ifdef HAVE_LONG_LONG_TYPE |
| if((vto[i].flags & FLAGS_LONGLONG) && (vto[i].flags & FLAGS_UNSIGNED)) |
| vto[i].data.num.as_unsigned = |
| (mp_uintmax_t)va_arg(arglist, mp_uintmax_t); |
| else if(vto[i].flags & FLAGS_LONGLONG) |
| vto[i].data.num.as_signed = |
| (mp_intmax_t)va_arg(arglist, mp_intmax_t); |
| else |
| #endif |
| { |
| if((vto[i].flags & FLAGS_LONG) && (vto[i].flags & FLAGS_UNSIGNED)) |
| vto[i].data.num.as_unsigned = |
| (mp_uintmax_t)va_arg(arglist, unsigned long); |
| else if(vto[i].flags & FLAGS_LONG) |
| vto[i].data.num.as_signed = |
| (mp_intmax_t)va_arg(arglist, long); |
| else if(vto[i].flags & FLAGS_UNSIGNED) |
| vto[i].data.num.as_unsigned = |
| (mp_uintmax_t)va_arg(arglist, unsigned int); |
| else |
| vto[i].data.num.as_signed = |
| (mp_intmax_t)va_arg(arglist, int); |
| } |
| break; |
| |
| case FORMAT_DOUBLE: |
| vto[i].data.dnum = va_arg(arglist, double); |
| break; |
| |
| case FORMAT_WIDTH: |
| /* Argument has been read. Silently convert it into an integer |
| * for later use |
| */ |
| vto[i].type = FORMAT_INT; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| return 0; |
| |
| } |
| |
| static int dprintf_formatf( |
| void *data, /* untouched by format(), just sent to the stream() function in |
| the second argument */ |
| /* function pointer called for each output character */ |
| int (*stream)(int, FILE *), |
| const char *format, /* %-formatted string */ |
| va_list ap_save) /* list of parameters */ |
| { |
| /* Base-36 digits for numbers. */ |
| const char *digits = lower_digits; |
| |
| /* Pointer into the format string. */ |
| char *f; |
| |
| /* Number of characters written. */ |
| int done = 0; |
| |
| long param; /* current parameter to read */ |
| long param_num = 0; /* parameter counter */ |
| |
| va_stack_t vto[MAX_PARAMETERS]; |
| char *endpos[MAX_PARAMETERS]; |
| char **end; |
| |
| char work[BUFFSIZE]; |
| |
| va_stack_t *p; |
| |
| /* 'workend' points to the final buffer byte position, but with an extra |
| byte as margin to avoid the (false?) warning Coverity gives us |
| otherwise */ |
| char *workend = &work[sizeof(work) - 2]; |
| |
| /* Do the actual %-code parsing */ |
| if(dprintf_Pass1(format, vto, endpos, ap_save)) |
| return -1; |
| |
| end = &endpos[0]; /* the initial end-position from the list dprintf_Pass1() |
| created for us */ |
| |
| f = (char *)format; |
| while(*f != '\0') { |
| /* Format spec modifiers. */ |
| int is_alt; |
| |
| /* Width of a field. */ |
| long width; |
| |
| /* Precision of a field. */ |
| long prec; |
| |
| /* Decimal integer is negative. */ |
| int is_neg; |
| |
| /* Base of a number to be written. */ |
| unsigned long base; |
| |
| /* Integral values to be written. */ |
| mp_uintmax_t num; |
| |
| /* Used to convert negative in positive. */ |
| mp_intmax_t signed_num; |
| |
| char *w; |
| |
| if(*f != '%') { |
| /* This isn't a format spec, so write everything out until the next one |
| OR end of string is reached. */ |
| do { |
| OUTCHAR(*f); |
| } while(*++f && ('%' != *f)); |
| continue; |
| } |
| |
| ++f; |
| |
| /* Check for "%%". Note that although the ANSI standard lists |
| '%' as a conversion specifier, it says "The complete format |
| specification shall be `%%'," so we can avoid all the width |
| and precision processing. */ |
| if(*f == '%') { |
| ++f; |
| OUTCHAR('%'); |
| continue; |
| } |
| |
| /* If this is a positional parameter, the position must follow immediately |
| after the %, thus create a %<num>$ sequence */ |
| param = dprintf_DollarString(f, &f); |
| |
| if(!param) |
| param = param_num; |
| else |
| --param; |
| |
| param_num++; /* increase this always to allow "%2$s %1$s %s" and then the |
| third %s will pick the 3rd argument */ |
| |
| p = &vto[param]; |
| |
| /* pick up the specified width */ |
| if(p->flags & FLAGS_WIDTHPARAM) { |
| width = (long)vto[p->width].data.num.as_signed; |
| param_num++; /* since the width is extracted from a parameter, we |
| must skip that to get to the next one properly */ |
| if(width < 0) { |
| /* "A negative field width is taken as a '-' flag followed by a |
| positive field width." */ |
| width = -width; |
| p->flags |= FLAGS_LEFT; |
| p->flags &= ~FLAGS_PAD_NIL; |
| } |
| } |
| else |
| width = p->width; |
| |
| /* pick up the specified precision */ |
| if(p->flags & FLAGS_PRECPARAM) { |
| prec = (long)vto[p->precision].data.num.as_signed; |
| param_num++; /* since the precision is extracted from a parameter, we |
| must skip that to get to the next one properly */ |
| if(prec < 0) |
| /* "A negative precision is taken as if the precision were |
| omitted." */ |
| prec = -1; |
| } |
| else if(p->flags & FLAGS_PREC) |
| prec = p->precision; |
| else |
| prec = -1; |
| |
| is_alt = (p->flags & FLAGS_ALT) ? 1 : 0; |
| |
| switch(p->type) { |
| case FORMAT_INT: |
| num = p->data.num.as_unsigned; |
| if(p->flags & FLAGS_CHAR) { |
| /* Character. */ |
| if(!(p->flags & FLAGS_LEFT)) |
| while(--width > 0) |
| OUTCHAR(' '); |
| OUTCHAR((char) num); |
| if(p->flags & FLAGS_LEFT) |
| while(--width > 0) |
| OUTCHAR(' '); |
| break; |
| } |
| if(p->flags & FLAGS_OCTAL) { |
| /* Octal unsigned integer. */ |
| base = 8; |
| goto unsigned_number; |
| } |
| else if(p->flags & FLAGS_HEX) { |
| /* Hexadecimal unsigned integer. */ |
| |
| digits = (p->flags & FLAGS_UPPER)? upper_digits : lower_digits; |
| base = 16; |
| goto unsigned_number; |
| } |
| else if(p->flags & FLAGS_UNSIGNED) { |
| /* Decimal unsigned integer. */ |
| base = 10; |
| goto unsigned_number; |
| } |
| |
| /* Decimal integer. */ |
| base = 10; |
| |
| is_neg = (p->data.num.as_signed < (mp_intmax_t)0) ? 1 : 0; |
| if(is_neg) { |
| /* signed_num might fail to hold absolute negative minimum by 1 */ |
| signed_num = p->data.num.as_signed + (mp_intmax_t)1; |
| signed_num = -signed_num; |
| num = (mp_uintmax_t)signed_num; |
| num += (mp_uintmax_t)1; |
| } |
| |
| goto number; |
| |
| unsigned_number: |
| /* Unsigned number of base BASE. */ |
| is_neg = 0; |
| |
| number: |
| /* Number of base BASE. */ |
| |
| /* Supply a default precision if none was given. */ |
| if(prec == -1) |
| prec = 1; |
| |
| /* Put the number in WORK. */ |
| w = workend; |
| while(num > 0) { |
| *w-- = digits[num % base]; |
| num /= base; |
| } |
| width -= (long)(workend - w); |
| prec -= (long)(workend - w); |
| |
| if(is_alt && base == 8 && prec <= 0) { |
| *w-- = '0'; |
| --width; |
| } |
| |
| if(prec > 0) { |
| width -= prec; |
| while(prec-- > 0) |
| *w-- = '0'; |
| } |
| |
| if(is_alt && base == 16) |
| width -= 2; |
| |
| if(is_neg || (p->flags & FLAGS_SHOWSIGN) || (p->flags & FLAGS_SPACE)) |
| --width; |
| |
| if(!(p->flags & FLAGS_LEFT) && !(p->flags & FLAGS_PAD_NIL)) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| |
| if(is_neg) |
| OUTCHAR('-'); |
| else if(p->flags & FLAGS_SHOWSIGN) |
| OUTCHAR('+'); |
| else if(p->flags & FLAGS_SPACE) |
| OUTCHAR(' '); |
| |
| if(is_alt && base == 16) { |
| OUTCHAR('0'); |
| if(p->flags & FLAGS_UPPER) |
| OUTCHAR('X'); |
| else |
| OUTCHAR('x'); |
| } |
| |
| if(!(p->flags & FLAGS_LEFT) && (p->flags & FLAGS_PAD_NIL)) |
| while(width-- > 0) |
| OUTCHAR('0'); |
| |
| /* Write the number. */ |
| while(++w <= workend) { |
| OUTCHAR(*w); |
| } |
| |
| if(p->flags & FLAGS_LEFT) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| break; |
| |
| case FORMAT_STRING: |
| /* String. */ |
| { |
| static const char null[] = "(nil)"; |
| const char *str; |
| size_t len; |
| |
| str = (char *) p->data.str; |
| if(str == NULL) { |
| /* Write null[] if there's space. */ |
| if(prec == -1 || prec >= (long) sizeof(null) - 1) { |
| str = null; |
| len = sizeof(null) - 1; |
| /* Disable quotes around (nil) */ |
| p->flags &= (~FLAGS_ALT); |
| } |
| else { |
| str = ""; |
| len = 0; |
| } |
| } |
| else if(prec != -1) |
| len = (size_t)prec; |
| else |
| len = strlen(str); |
| |
| width -= (len > LONG_MAX) ? LONG_MAX : (long)len; |
| |
| if(p->flags & FLAGS_ALT) |
| OUTCHAR('"'); |
| |
| if(!(p->flags&FLAGS_LEFT)) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| |
| for(; len && *str; len--) |
| OUTCHAR(*str++); |
| if(p->flags&FLAGS_LEFT) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| |
| if(p->flags & FLAGS_ALT) |
| OUTCHAR('"'); |
| } |
| break; |
| |
| case FORMAT_PTR: |
| /* Generic pointer. */ |
| { |
| void *ptr; |
| ptr = (void *) p->data.ptr; |
| if(ptr != NULL) { |
| /* If the pointer is not NULL, write it as a %#x spec. */ |
| base = 16; |
| digits = (p->flags & FLAGS_UPPER)? upper_digits : lower_digits; |
| is_alt = 1; |
| num = (size_t) ptr; |
| is_neg = 0; |
| goto number; |
| } |
| else { |
| /* Write "(nil)" for a nil pointer. */ |
| static const char strnil[] = "(nil)"; |
| const char *point; |
| |
| width -= (long)(sizeof(strnil) - 1); |
| if(p->flags & FLAGS_LEFT) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| for(point = strnil; *point != '\0'; ++point) |
| OUTCHAR(*point); |
| if(! (p->flags & FLAGS_LEFT)) |
| while(width-- > 0) |
| OUTCHAR(' '); |
| } |
| } |
| break; |
| |
| case FORMAT_DOUBLE: |
| { |
| char formatbuf[32]="%"; |
| char *fptr = &formatbuf[1]; |
| size_t left = sizeof(formatbuf)-strlen(formatbuf); |
| int len; |
| |
| width = -1; |
| if(p->flags & FLAGS_WIDTH) |
| width = p->width; |
| else if(p->flags & FLAGS_WIDTHPARAM) |
| width = (long)vto[p->width].data.num.as_signed; |
| |
| prec = -1; |
| if(p->flags & FLAGS_PREC) |
| prec = p->precision; |
| else if(p->flags & FLAGS_PRECPARAM) |
| prec = (long)vto[p->precision].data.num.as_signed; |
| |
| if(p->flags & FLAGS_LEFT) |
| *fptr++ = '-'; |
| if(p->flags & FLAGS_SHOWSIGN) |
| *fptr++ = '+'; |
| if(p->flags & FLAGS_SPACE) |
| *fptr++ = ' '; |
| if(p->flags & FLAGS_ALT) |
| *fptr++ = '#'; |
| |
| *fptr = 0; |
| |
| if(width >= 0) { |
| if(width >= (long)sizeof(work)) |
| width = sizeof(work)-1; |
| /* RECURSIVE USAGE */ |
| len = curl_msnprintf(fptr, left, "%ld", width); |
| fptr += len; |
| left -= len; |
| } |
| if(prec >= 0) { |
| /* for each digit in the integer part, we can have one less |
| precision */ |
| size_t maxprec = sizeof(work) - 2; |
| double val = p->data.dnum; |
| while(val >= 10.0) { |
| val /= 10; |
| maxprec--; |
| } |
| |
| if(prec > (long)maxprec) |
| prec = (long)maxprec-1; |
| /* RECURSIVE USAGE */ |
| len = curl_msnprintf(fptr, left, ".%ld", prec); |
| fptr += len; |
| } |
| if(p->flags & FLAGS_LONG) |
| *fptr++ = 'l'; |
| |
| if(p->flags & FLAGS_FLOATE) |
| *fptr++ = (char)((p->flags & FLAGS_UPPER) ? 'E':'e'); |
| else if(p->flags & FLAGS_FLOATG) |
| *fptr++ = (char)((p->flags & FLAGS_UPPER) ? 'G' : 'g'); |
| else |
| *fptr++ = 'f'; |
| |
| *fptr = 0; /* and a final zero termination */ |
| |
| /* NOTE NOTE NOTE!! Not all sprintf implementations return number of |
| output characters */ |
| (sprintf)(work, formatbuf, p->data.dnum); |
| DEBUGASSERT(strlen(work) <= sizeof(work)); |
| for(fptr = work; *fptr; fptr++) |
| OUTCHAR(*fptr); |
| } |
| break; |
| |
| case FORMAT_INTPTR: |
| /* Answer the count of characters written. */ |
| #ifdef HAVE_LONG_LONG_TYPE |
| if(p->flags & FLAGS_LONGLONG) |
| *(LONG_LONG_TYPE *) p->data.ptr = (LONG_LONG_TYPE)done; |
| else |
| #endif |
| if(p->flags & FLAGS_LONG) |
| *(long *) p->data.ptr = (long)done; |
| else if(!(p->flags & FLAGS_SHORT)) |
| *(int *) p->data.ptr = (int)done; |
| else |
| *(short *) p->data.ptr = (short)done; |
| break; |
| |
| default: |
| break; |
| } |
| f = *end++; /* goto end of %-code */ |
| |
| } |
| return done; |
| } |
| |
| /* fputc() look-alike */ |
| static int addbyter(int output, FILE *data) |
| { |
| struct nsprintf *infop = (struct nsprintf *)data; |
| unsigned char outc = (unsigned char)output; |
| |
| if(infop->length < infop->max) { |
| /* only do this if we haven't reached max length yet */ |
| infop->buffer[0] = outc; /* store */ |
| infop->buffer++; /* increase pointer */ |
| infop->length++; /* we are now one byte larger */ |
| return outc; /* fputc() returns like this on success */ |
| } |
| return -1; |
| } |
| |
| int curl_mvsnprintf(char *buffer, size_t maxlength, const char *format, |
| va_list ap_save) |
| { |
| int retcode; |
| struct nsprintf info; |
| |
| info.buffer = buffer; |
| info.length = 0; |
| info.max = maxlength; |
| |
| retcode = dprintf_formatf(&info, addbyter, format, ap_save); |
| if((retcode != -1) && info.max) { |
| /* we terminate this with a zero byte */ |
| if(info.max == info.length) |
| /* we're at maximum, scrap the last letter */ |
| info.buffer[-1] = 0; |
| else |
| info.buffer[0] = 0; |
| } |
| return retcode; |
| } |
| |
| int curl_msnprintf(char *buffer, size_t maxlength, const char *format, ...) |
| { |
| int retcode; |
| va_list ap_save; /* argument pointer */ |
| va_start(ap_save, format); |
| retcode = curl_mvsnprintf(buffer, maxlength, format, ap_save); |
| va_end(ap_save); |
| return retcode; |
| } |
| |
| /* fputc() look-alike */ |
| static int alloc_addbyter(int output, FILE *data) |
| { |
| struct asprintf *infop = (struct asprintf *)data; |
| unsigned char outc = (unsigned char)output; |
| |
| if(!infop->buffer) { |
| infop->buffer = malloc(32); |
| if(!infop->buffer) { |
| infop->fail = 1; |
| return -1; /* fail */ |
| } |
| infop->alloc = 32; |
| infop->len = 0; |
| } |
| else if(infop->len + 1 >= infop->alloc) { |
| char *newptr = NULL; |
| size_t newsize = infop->alloc*2; |
| |
| /* detect wrap-around or other overflow problems */ |
| if(newsize > infop->alloc) |
| newptr = realloc(infop->buffer, newsize); |
| |
| if(!newptr) { |
| infop->fail = 1; |
| return -1; /* fail */ |
| } |
| infop->buffer = newptr; |
| infop->alloc = newsize; |
| } |
| |
| infop->buffer[ infop->len ] = outc; |
| |
| infop->len++; |
| |
| return outc; /* fputc() returns like this on success */ |
| } |
| |
| char *curl_maprintf(const char *format, ...) |
| { |
| va_list ap_save; /* argument pointer */ |
| int retcode; |
| struct asprintf info; |
| |
| info.buffer = NULL; |
| info.len = 0; |
| info.alloc = 0; |
| info.fail = 0; |
| |
| va_start(ap_save, format); |
| retcode = dprintf_formatf(&info, alloc_addbyter, format, ap_save); |
| va_end(ap_save); |
| if((-1 == retcode) || info.fail) { |
| if(info.alloc) |
| free(info.buffer); |
| return NULL; |
| } |
| if(info.alloc) { |
| info.buffer[info.len] = 0; /* we terminate this with a zero byte */ |
| return info.buffer; |
| } |
| return strdup(""); |
| } |
| |
| char *curl_mvaprintf(const char *format, va_list ap_save) |
| { |
| int retcode; |
| struct asprintf info; |
| |
| info.buffer = NULL; |
| info.len = 0; |
| info.alloc = 0; |
| info.fail = 0; |
| |
| retcode = dprintf_formatf(&info, alloc_addbyter, format, ap_save); |
| if((-1 == retcode) || info.fail) { |
| if(info.alloc) |
| free(info.buffer); |
| return NULL; |
| } |
| |
| if(info.alloc) { |
| info.buffer[info.len] = 0; /* we terminate this with a zero byte */ |
| return info.buffer; |
| } |
| return strdup(""); |
| } |
| |
| static int storebuffer(int output, FILE *data) |
| { |
| char **buffer = (char **)data; |
| unsigned char outc = (unsigned char)output; |
| **buffer = outc; |
| (*buffer)++; |
| return outc; /* act like fputc() ! */ |
| } |
| |
| int curl_msprintf(char *buffer, const char *format, ...) |
| { |
| va_list ap_save; /* argument pointer */ |
| int retcode; |
| va_start(ap_save, format); |
| retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save); |
| va_end(ap_save); |
| *buffer = 0; /* we terminate this with a zero byte */ |
| return retcode; |
| } |
| |
| int curl_mprintf(const char *format, ...) |
| { |
| int retcode; |
| va_list ap_save; /* argument pointer */ |
| va_start(ap_save, format); |
| |
| retcode = dprintf_formatf(stdout, fputc, format, ap_save); |
| va_end(ap_save); |
| return retcode; |
| } |
| |
| int curl_mfprintf(FILE *whereto, const char *format, ...) |
| { |
| int retcode; |
| va_list ap_save; /* argument pointer */ |
| va_start(ap_save, format); |
| retcode = dprintf_formatf(whereto, fputc, format, ap_save); |
| va_end(ap_save); |
| return retcode; |
| } |
| |
| int curl_mvsprintf(char *buffer, const char *format, va_list ap_save) |
| { |
| int retcode; |
| retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save); |
| *buffer = 0; /* we terminate this with a zero byte */ |
| return retcode; |
| } |
| |
| int curl_mvprintf(const char *format, va_list ap_save) |
| { |
| return dprintf_formatf(stdout, fputc, format, ap_save); |
| } |
| |
| int curl_mvfprintf(FILE *whereto, const char *format, va_list ap_save) |
| { |
| return dprintf_formatf(whereto, fputc, format, ap_save); |
| } |
