Change the NSS and NSPR source tree to the new directory structure to be

mozilla/nsprpub/pr/src/io/prscanf.c

Index: mozilla/nsprpub/pr/src/io/prscanf.c
===================================================================
--- mozilla/nsprpub/pr/src/io/prscanf.c	(revision 191424)
+++ mozilla/nsprpub/pr/src/io/prscanf.c	(working copy)
@@ -1,634 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
- * Scan functions for NSPR types
- *
- * Author: Wan-Teh Chang
- *
- * Acknowledgment: The implementation is inspired by the source code
- * in P.J. Plauger's "The Standard C Library," Prentice-Hall, 1992.
- */
-
-#include <limits.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdlib.h>
-#include "prprf.h"
-#include "prdtoa.h"
-#include "prlog.h"
-#include "prerror.h"
-
-/*
- * A function that reads a character from 'stream'.
- * Returns the character read, or EOF if end of stream is reached.
- */
-typedef int (*_PRGetCharFN)(void *stream);
-
-/*
- * A function that pushes the character 'ch' back to 'stream'.
- */
-typedef void (*_PRUngetCharFN)(void *stream, int ch); 
-
-/*
- * The size specifier for the integer and floating point number
- * conversions in format control strings.
- */
-typedef enum {
-    _PR_size_none,  /* No size specifier is given */
-    _PR_size_h,     /* The 'h' specifier, suggesting "short" */
-    _PR_size_l,     /* The 'l' specifier, suggesting "long" */
-    _PR_size_L,     /* The 'L' specifier, meaning a 'long double' */
-    _PR_size_ll     /* The 'll' specifier, suggesting "long long" */
-} _PRSizeSpec;
-
-/*
- * The collection of data that is passed between the scan function
- * and its subordinate functions.  The fields of this structure
- * serve as the input or output arguments for these functions.
- */
-typedef struct {
-    _PRGetCharFN get;        /* get a character from input stream */
-    _PRUngetCharFN unget;    /* unget (push back) a character */
-    void *stream;            /* argument for get and unget */
-    va_list ap;              /* the variable argument list */
-    int nChar;               /* number of characters read from 'stream' */
-
-    PRBool assign;           /* assign, or suppress assignment? */
-    int width;               /* field width */
-    _PRSizeSpec sizeSpec;    /* 'h', 'l', 'L', or 'll' */
-
-    PRBool converted;        /* is the value actually converted? */
-} ScanfState;
-
-#define GET(state) ((state)->nChar++, (state)->get((state)->stream))
-#define UNGET(state, ch) \
-        ((state)->nChar--, (state)->unget((state)->stream, ch))
-
-/*
- * The following two macros, GET_IF_WITHIN_WIDTH and WITHIN_WIDTH,
- * are always used together.
- *
- * GET_IF_WITHIN_WIDTH calls the GET macro and assigns its return
- * value to 'ch' only if we have not exceeded the field width of
- * 'state'.  Therefore, after GET_IF_WITHIN_WIDTH, the value of
- * 'ch' is valid only if the macro WITHIN_WIDTH evaluates to true.
- */
-
-#define GET_IF_WITHIN_WIDTH(state, ch) \
-        if (--(state)->width >= 0) { \
-            (ch) = GET(state); \
-        }
-#define WITHIN_WIDTH(state) ((state)->width >= 0)
-
-/*
- * _pr_strtoull:
- *     Convert a string to an unsigned 64-bit integer.  The string
- *     'str' is assumed to be a representation of the integer in
- *     base 'base'.
- *
- * Warning: 
- *     - Only handle base 8, 10, and 16.
- *     - No overflow checking.
- */
-
-static PRUint64
-_pr_strtoull(const char *str, char **endptr, int base)
-{
-    static const int BASE_MAX = 16;
-    static const char digits[] = "0123456789abcdef";
-    char *digitPtr;
-    PRUint64 x;    /* return value */
-    PRInt64 base64;
-    const char *cPtr;
-    PRBool negative;
-    const char *digitStart;
-
-    PR_ASSERT(base == 0 || base == 8 || base == 10 || base == 16);
-    if (base < 0 || base == 1 || base > BASE_MAX) {
-        if (endptr) {
-            *endptr = (char *) str;
-            return LL_ZERO;
-        }
-    }
-
-    cPtr = str;
-    while (isspace(*cPtr)) {
-        ++cPtr;
-    }
-
-    negative = PR_FALSE;
-    if (*cPtr == '-') {
-        negative = PR_TRUE;
-        cPtr++;
-    } else if (*cPtr == '+') {
-        cPtr++;
-    }
-
-    if (base == 16) {
-        if (*cPtr == '0' && (cPtr[1] == 'x' || cPtr[1] == 'X')) {
-            cPtr += 2;
-        }
-    } else if (base == 0) {
-        if (*cPtr != '0') {
-            base = 10;
-        } else if (cPtr[1] == 'x' || cPtr[1] == 'X') {
-            base = 16;
-            cPtr += 2;
-        } else {
-            base = 8;
-        } 
-    }
-    PR_ASSERT(base != 0);
-    LL_I2L(base64, base);
-    digitStart = cPtr;
-
-    /* Skip leading zeros */
-    while (*cPtr == '0') {
-        cPtr++;
-    }
-
-    LL_I2L(x, 0);
-    while ((digitPtr = (char*)memchr(digits, tolower(*cPtr), base)) != NULL) {
-        PRUint64 d;
-
-        LL_I2L(d, (digitPtr - digits));
-        LL_MUL(x, x, base64);
-        LL_ADD(x, x, d);
-        cPtr++;
-    }
-
-    if (cPtr == digitStart) {
-        if (endptr) {
-            *endptr = (char *) str;
-        }
-        return LL_ZERO;
-    }
-
-    if (negative) {
-#ifdef HAVE_LONG_LONG
-        /* The cast to a signed type is to avoid a compiler warning */
-        x = -(PRInt64)x;
-#else
-        LL_NEG(x, x);
-#endif
-    }
-
-    if (endptr) {
-        *endptr = (char *) cPtr;
-    }
-    return x;
-}
-
-/*
- * The maximum field width (in number of characters) that is enough
- * (may be more than necessary) to represent a 64-bit integer or
- * floating point number.
- */
-#define FMAX 31
-#define DECIMAL_POINT '.'
-
-static PRStatus
-GetInt(ScanfState *state, int code)
-{
-    char buf[FMAX + 1], *p;
-    int ch;
-    static const char digits[] = "0123456789abcdefABCDEF";
-    PRBool seenDigit = PR_FALSE;
-    int base;
-    int dlen;
-
-    switch (code) {
-        case 'd': case 'u':
-            base = 10;
-            break;
-        case 'i':
-            base = 0;
-            break;
-        case 'x': case 'X': case 'p':
-            base = 16;
-            break;
-        case 'o':
-            base = 8;
-            break;
-        default:
-            return PR_FAILURE;
-    }
-    if (state->width == 0 || state->width > FMAX) {
-        state->width = FMAX;
-    }
-    p = buf;
-    GET_IF_WITHIN_WIDTH(state, ch);
-    if (WITHIN_WIDTH(state) && (ch == '+' || ch == '-')) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-    }
-    if (WITHIN_WIDTH(state) && ch == '0') {
-        seenDigit = PR_TRUE;
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-        if (WITHIN_WIDTH(state)
-                && (ch == 'x' || ch == 'X')
-                && (base == 0 || base == 16)) {
-            base = 16;
-            *p++ = ch;
-            GET_IF_WITHIN_WIDTH(state, ch);
-        } else if (base == 0) {
-            base = 8;
-        }
-    }
-    if (base == 0 || base == 10) {
-        dlen = 10;
-    } else if (base == 8) {
-        dlen = 8;
-    } else {
-        PR_ASSERT(base == 16);
-        dlen = 16 + 6; /* 16 digits, plus 6 in uppercase */
-    }
-    while (WITHIN_WIDTH(state) && memchr(digits, ch, dlen)) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-        seenDigit = PR_TRUE;
-    }
-    if (WITHIN_WIDTH(state)) {
-        UNGET(state, ch);
-    }
-    if (!seenDigit) {
-        return PR_FAILURE;
-    }
-    *p = '\0';
-    if (state->assign) {
-        if (code == 'd' || code == 'i') {
-            if (state->sizeSpec == _PR_size_ll) {
-                PRInt64 llval = _pr_strtoull(buf, NULL, base);
-                *va_arg(state->ap, PRInt64 *) = llval;
-            } else {
-                long lval = strtol(buf, NULL, base);
-
-                if (state->sizeSpec == _PR_size_none) {
-                    *va_arg(state->ap, PRIntn *) = lval;
-                } else if (state->sizeSpec == _PR_size_h) {
-                    *va_arg(state->ap, PRInt16 *) = (PRInt16)lval;
-                } else if (state->sizeSpec == _PR_size_l) {
-                    *va_arg(state->ap, PRInt32 *) = lval;
-                } else {
-                    return PR_FAILURE;
-                }
-            }
-        } else {
-            if (state->sizeSpec == _PR_size_ll) {
-                PRUint64 llval = _pr_strtoull(buf, NULL, base);
-                *va_arg(state->ap, PRUint64 *) = llval;
-            } else {
-                unsigned long lval = strtoul(buf, NULL, base);
-
-                if (state->sizeSpec == _PR_size_none) {
-                    *va_arg(state->ap, PRUintn *) = lval;
-                } else if (state->sizeSpec == _PR_size_h) {
-                    *va_arg(state->ap, PRUint16 *) = (PRUint16)lval;
-                } else if (state->sizeSpec == _PR_size_l) {
-                    *va_arg(state->ap, PRUint32 *) = lval;
-                } else {
-                    return PR_FAILURE;
-                }
-            }
-        }
-        state->converted = PR_TRUE;
-    }
-    return PR_SUCCESS;
-}
-
-static PRStatus
-GetFloat(ScanfState *state)
-{
-    char buf[FMAX + 1], *p;
-    int ch;
-    PRBool seenDigit = PR_FALSE;
-
-    if (state->width == 0 || state->width > FMAX) {
-        state->width = FMAX;
-    }
-    p = buf;
-    GET_IF_WITHIN_WIDTH(state, ch);
-    if (WITHIN_WIDTH(state) && (ch == '+' || ch == '-')) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-    }
-    while (WITHIN_WIDTH(state) && isdigit(ch)) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-        seenDigit = PR_TRUE;
-    }
-    if (WITHIN_WIDTH(state) && ch == DECIMAL_POINT) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-        while (WITHIN_WIDTH(state) && isdigit(ch)) {
-            *p++ = ch;
-            GET_IF_WITHIN_WIDTH(state, ch);
-            seenDigit = PR_TRUE;
-        }
-    }
-
-    /*
-     * This is not robust.  For example, "1.2e+" would confuse
-     * the code below to read 'e' and '+', only to realize that
-     * it should have stopped at "1.2".  But we can't push back
-     * more than one character, so there is nothing I can do.
-     */
-
-    /* Parse exponent */
-    if (WITHIN_WIDTH(state) && (ch == 'e' || ch == 'E') && seenDigit) {
-        *p++ = ch;
-        GET_IF_WITHIN_WIDTH(state, ch);
-        if (WITHIN_WIDTH(state) && (ch == '+' || ch == '-')) {
-            *p++ = ch;
-            GET_IF_WITHIN_WIDTH(state, ch);
-        }
-        while (WITHIN_WIDTH(state) && isdigit(ch)) {
-            *p++ = ch;
-            GET_IF_WITHIN_WIDTH(state, ch);
-        }
-    }
-    if (WITHIN_WIDTH(state)) {
-        UNGET(state, ch);
-    }
-    if (!seenDigit) {
-        return PR_FAILURE;
-    }
-    *p = '\0';
-    if (state->assign) {
-        PRFloat64 dval = PR_strtod(buf, NULL);
-
-        state->converted = PR_TRUE;
-        if (state->sizeSpec == _PR_size_l) {
-            *va_arg(state->ap, PRFloat64 *) = dval;
-        } else if (state->sizeSpec == _PR_size_L) {
-#if defined(OSF1) || defined(IRIX)
-            *va_arg(state->ap, double *) = dval;
-#else
-            *va_arg(state->ap, long double *) = dval;
-#endif
-        } else {
-            *va_arg(state->ap, float *) = (float) dval;
-        }
-    }
-    return PR_SUCCESS;
-}
-
-/*
- * Convert, and return the end of the conversion spec.
- * Return NULL on error.
- */
-
-static const char *
-Convert(ScanfState *state, const char *fmt)
-{
-    const char *cPtr;
-    int ch;
-    char *cArg = NULL;
-
-    state->converted = PR_FALSE;
-    cPtr = fmt;
-    if (*cPtr != 'c' && *cPtr != 'n' && *cPtr != '[') {
-        do {
-            ch = GET(state);
-        } while (isspace(ch));
-        UNGET(state, ch);
-    }
-    switch (*cPtr) {
-        case 'c':
-            if (state->assign) {
-                cArg = va_arg(state->ap, char *);
-            }
-            if (state->width == 0) {
-                state->width = 1;
-            }
-            for (; state->width > 0; state->width--) {
-                ch = GET(state);
-                if (ch == EOF) {
-                    return NULL;
-                } else if (state->assign) {
-                    *cArg++ = ch;
-                }
-            }
-            if (state->assign) {
-                state->converted = PR_TRUE;
-            }
-            break;
-        case 'p':
-        case 'd': case 'i': case 'o':
-        case 'u': case 'x': case 'X':
-            if (GetInt(state, *cPtr) == PR_FAILURE) {
-                return NULL;
-            }
-            break;
-        case 'e': case 'E': case 'f':
-        case 'g': case 'G':
-            if (GetFloat(state) == PR_FAILURE) {
-                return NULL;
-            }
-            break;
-        case 'n':
-            /* do not consume any input */
-            if (state->assign) {
-                switch (state->sizeSpec) {
-                    case _PR_size_none:
-                        *va_arg(state->ap, PRIntn *) = state->nChar;
-                        break;
-                    case _PR_size_h:
-                        *va_arg(state->ap, PRInt16 *) = state->nChar;
-                        break;
-                    case _PR_size_l:
-                        *va_arg(state->ap, PRInt32 *) = state->nChar;
-                        break;
-                    case _PR_size_ll:
-                        LL_I2L(*va_arg(state->ap, PRInt64 *), state->nChar);
-                        break;
-                    default:
-                        PR_ASSERT(0);
-                }
-            }
-            break;
-        case 's':
-            if (state->width == 0) {
-                state->width = INT_MAX;
-            }
-            if (state->assign) {
-                cArg = va_arg(state->ap, char *);
-            }
-            for (; state->width > 0; state->width--) {
-                ch = GET(state);
-                if ((ch == EOF) || isspace(ch)) {
-                    UNGET(state, ch);
-                    break;
-                }
-                if (state->assign) {
-                    *cArg++ = ch;
-                }
-            }
-            if (state->assign) {
-                *cArg = '\0';
-                state->converted = PR_TRUE;
-            }
-            break;
-        case '%':
-            ch = GET(state);
-            if (ch != '%') {
-                UNGET(state, ch);
-                return NULL;
-            }
-            break;
-        case '[':
-            {
-                PRBool complement = PR_FALSE;
-                const char *closeBracket;
-                size_t n;
-
-                if (*++cPtr == '^') {
-                    complement = PR_TRUE;
-                    cPtr++;
-                }
-                closeBracket = strchr(*cPtr == ']' ? cPtr + 1 : cPtr, ']');
-                if (closeBracket == NULL) {
-                    return NULL;
-                }
-                n = closeBracket - cPtr;
-                if (state->width == 0) {
-                    state->width = INT_MAX;
-                }
-                if (state->assign) {
-                    cArg = va_arg(state->ap, char *);
-                }
-                for (; state->width > 0; state->width--) {
-                    ch = GET(state);
-                    if ((ch == EOF) 
-                            || (!complement && !memchr(cPtr, ch, n))
-                            || (complement && memchr(cPtr, ch, n))) {
-                        UNGET(state, ch);
-                        break;
-                    }
-                    if (state->assign) {
-                        *cArg++ = ch;
-                    }
-                }
-                if (state->assign) {
-                    *cArg = '\0';
-                    state->converted = PR_TRUE;
-                }
-                cPtr = closeBracket;
-            }
-            break;
-        default:
-            return NULL;
-    }
-    return cPtr;
-}
-
-static PRInt32
-DoScanf(ScanfState *state, const char *fmt)
-{
-    PRInt32 nConverted = 0;
-    const char *cPtr;
-    int ch;
-
-    state->nChar = 0;
-    cPtr = fmt;
-    while (1) {
-        if (isspace(*cPtr)) {
-            /* white space: skip */
-            do {
-                cPtr++;
-            } while (isspace(*cPtr));
-            do {
-                ch = GET(state);
-            } while (isspace(ch));
-            UNGET(state, ch);
-        } else if (*cPtr == '%') {
-            /* format spec: convert */
-            cPtr++;
-            state->assign = PR_TRUE;
-            if (*cPtr == '*') {
-                cPtr++;
-                state->assign = PR_FALSE;
-            }
-            for (state->width = 0; isdigit(*cPtr); cPtr++) {
-                state->width = state->width * 10 + *cPtr - '0';
-            }
-            state->sizeSpec = _PR_size_none;
-            if (*cPtr == 'h') {
-                cPtr++;
-                state->sizeSpec = _PR_size_h;
-            } else if (*cPtr == 'l') {
-                cPtr++;
-                if (*cPtr == 'l') {
-                    cPtr++;
-                    state->sizeSpec = _PR_size_ll;
-                } else {
-                    state->sizeSpec = _PR_size_l;
-                }
-            } else if (*cPtr == 'L') {
-                cPtr++;
-                state->sizeSpec = _PR_size_L;
-            }
-            cPtr = Convert(state, cPtr);
-            if (cPtr == NULL) {
-                return (nConverted > 0 ? nConverted : EOF);
-            }
-            if (state->converted) {
-                nConverted++;
-            }
-            cPtr++;
-        } else {
-            /* others: must match */
-            if (*cPtr == '\0') {
-                return nConverted;
-            }
-            ch = GET(state);
-            if (ch != *cPtr) {
-                UNGET(state, ch);
-                return nConverted;
-            }
-            cPtr++;
-        }
-    }
-}
-
-static int
-StringGetChar(void *stream)
-{
-    char *cPtr = *((char **) stream);
-
-    if (*cPtr == '\0') {
-        return EOF;
-    } else {
-        *((char **) stream) = cPtr + 1;
-        return (unsigned char) *cPtr;
-    }
-}
-
-static void
-StringUngetChar(void *stream, int ch)
-{
-    char *cPtr = *((char **) stream);
-
-    if (ch != EOF) {
-        *((char **) stream) = cPtr - 1;
-    }
-}
-
-PR_IMPLEMENT(PRInt32)
-PR_sscanf(const char *buf, const char *fmt, ...)
-{
-    PRInt32 rv;
-    ScanfState state;
-
-    state.get = &StringGetChar;
-    state.unget = &StringUngetChar;
-    state.stream = (void *) &buf;
-    va_start(state.ap, fmt);
-    rv = DoScanf(&state, fmt);
-    va_end(state.ap);
-    return rv;
-}