The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/intl/hyphenation/src/hnjstdio.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,105 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +// This file provides substitutes for the basic stdio routines used by hyphen.c
    1.10 +// to read its dictionary files. We #define the stdio names to these versions
    1.11 +// in hnjalloc.h, so that we can use nsIURI and nsIInputStream to specify and
    1.12 +// access the dictionary resources.
    1.13 +
    1.14 +#include "hnjalloc.h"
    1.15 +#include "nsNetUtil.h"
    1.16 +
    1.17 +#define BUFSIZE 1024
    1.18 +
    1.19 +struct hnjFile_ {
    1.20 +    nsCOMPtr<nsIInputStream> mStream;
    1.21 +    char                     mBuffer[BUFSIZE];
    1.22 +    uint32_t                 mCurPos;
    1.23 +    uint32_t                 mLimit;
    1.24 +};
    1.25 +
    1.26 +// replacement for fopen()
    1.27 +// (not a full substitute: only supports read access)
    1.28 +hnjFile*
    1.29 +hnjFopen(const char* aURISpec, const char* aMode)
    1.30 +{
    1.31 +    // this override only needs to support "r"
    1.32 +    NS_ASSERTION(!strcmp(aMode, "r"), "unsupported fopen() mode in hnjFopen");
    1.33 +
    1.34 +    nsCOMPtr<nsIURI> uri;
    1.35 +    nsresult rv = NS_NewURI(getter_AddRefs(uri), aURISpec);
    1.36 +    if (NS_FAILED(rv)) {
    1.37 +        return nullptr;
    1.38 +    }
    1.39 +
    1.40 +    nsCOMPtr<nsIInputStream> instream;
    1.41 +    rv = NS_OpenURI(getter_AddRefs(instream), uri);
    1.42 +    if (NS_FAILED(rv)) {
    1.43 +        return nullptr;
    1.44 +    }
    1.45 +
    1.46 +    hnjFile *f = new hnjFile;
    1.47 +    f->mStream = instream;
    1.48 +    f->mCurPos = 0;
    1.49 +    f->mLimit = 0;
    1.50 +
    1.51 +    return f;
    1.52 +}
    1.53 +
    1.54 +// replacement for fclose()
    1.55 +int
    1.56 +hnjFclose(hnjFile* f)
    1.57 +{
    1.58 +    NS_ASSERTION(f && f->mStream, "bad argument to hnjFclose");
    1.59 +
    1.60 +    int result = 0;
    1.61 +    nsresult rv = f->mStream->Close();
    1.62 +    if (NS_FAILED(rv)) {
    1.63 +        result = EOF;
    1.64 +    }
    1.65 +    f->mStream = nullptr;
    1.66 +
    1.67 +    delete f;
    1.68 +    return result;
    1.69 +}
    1.70 +
    1.71 +// replacement for fgets()
    1.72 +// (not a full reimplementation, but sufficient for libhyphen's needs)
    1.73 +char*
    1.74 +hnjFgets(char* s, int n, hnjFile* f)
    1.75 +{
    1.76 +    NS_ASSERTION(s && f, "bad argument to hnjFgets");
    1.77 +
    1.78 +    int i = 0;
    1.79 +    while (i < n - 1) {
    1.80 +        if (f->mCurPos < f->mLimit) {
    1.81 +            char c = f->mBuffer[f->mCurPos++];
    1.82 +            s[i++] = c;
    1.83 +            if (c == '\n' || c == '\r') {
    1.84 +                break;
    1.85 +            }
    1.86 +            continue;
    1.87 +        }
    1.88 +
    1.89 +        f->mCurPos = 0;
    1.90 +
    1.91 +        nsresult rv = f->mStream->Read(f->mBuffer, BUFSIZE, &f->mLimit);
    1.92 +        if (NS_FAILED(rv)) {
    1.93 +            f->mLimit = 0;
    1.94 +            return nullptr;
    1.95 +        }
    1.96 +
    1.97 +        if (f->mLimit == 0) {
    1.98 +            break;
    1.99 +        }
   1.100 +    }
   1.101 +
   1.102 +    if (i == 0) {
   1.103 +        return nullptr; // end of file
   1.104 +    }
   1.105 +
   1.106 +    s[i] = '\0'; // null-terminate the returned string
   1.107 +    return s;
   1.108 +}