diff options
Diffstat (limited to 'ACEXML/common/ZipCharStream.cpp')
| -rw-r--r-- | ACEXML/common/ZipCharStream.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/ACEXML/common/ZipCharStream.cpp b/ACEXML/common/ZipCharStream.cpp new file mode 100644 index 00000000000..f16bc77f463 --- /dev/null +++ b/ACEXML/common/ZipCharStream.cpp @@ -0,0 +1,213 @@ +// $Id$ + +#include "ACEXML/common/ZipCharStream.h" +#include "ace/ACE.h" + + +ACEXML_ZipCharStream::ACEXML_ZipCharStream (void) + : filename_ (0), encoding_ (0), size_ (0), infile_ (NULL), pos_ (0), + limit_ (0) +{ +} + +ACEXML_ZipCharStream::~ACEXML_ZipCharStream (void) +{ + this->close(); +} + +int +ACEXML_ZipCharStream::open (const ACEXML_Char *name) +{ + delete[] this->filename_; + this->filename_ = 0; + + delete[] this->encoding_; + this->encoding_ = 0; + + this->infile_ = zzip_fopen (name, ACE_TEXT ("r")); + if (this->infile_ == NULL) + return -1; + + this->filename_ = ACE::strnew (ACE::basename (name)); + if (this->determine_encoding() == -1) + return -1; + return 0; +} + +int +ACEXML_ZipCharStream::determine_encoding (void) +{ + char input[4]; + int retval = 0; + int i = 0; + for (; i < 4 && (input[i] = this->peekchar_i(i)); ++i) + ; + if (i < 4) + return -1; + const ACEXML_Char* temp = ACEXML_Encoding::get_encoding (input); + if (!temp) + return -1; + else + { + this->encoding_ = ACE::strnew (temp); + // ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("File's encoding is %s\n"), +// this->encoding_)); + } + // Move over the byte-order-mark if present. + char ch; + for (int j = 0; j < 3; ++j) + { + if ((ch = this->peekchar_i()) < 0) + return -1; + if (ch == '\xFF' || ch == '\xFE' || ch == '\xEF' || ch == '\xBB' || + ch == '\xBF') + this->get(ch); + else + break; + } + return 0; +} + +void +ACEXML_ZipCharStream::rewind() +{ + zzip_rewind (this->infile_); +} + +int +ACEXML_ZipCharStream::available (void) +{ + long curr; + if ((curr = zzip_tell (this->infile_)) < 0) + return -1; + return (this->size_ - curr); +} + +int +ACEXML_ZipCharStream::close (void) +{ + if (this->infile_ != NULL) + zzip_close (this->infile_); + delete[] this->filename_; + delete[] this->encoding_; + this->size_ = 0; + return 0; +} + + +int +ACEXML_ZipCharStream::getchar_i (char& ch) +{ + if (this->pos_ < this->limit_) + { + ch = this->buf_[this->pos_++]; + return 0; + } + this->limit_ = zzip_read (this->infile_, this->buf_, sizeof (this->buf_)); + if (this->limit_ == 0) + return -1; + this->pos_ = 0; + ch = this->buf_[this->pos_++]; + return 0; +} + +int +ACEXML_ZipCharStream::peekchar_i (int offset) +{ + if (offset > sizeof (this->buf_)) + return -1; + if (this->pos_ + offset < this->limit_) + return this->buf_[this->pos_ + offset]; + int i = 0; + for (; this->pos_ < this->limit_; ++this->pos_, ++i) + this->buf_[i] = this->buf_[this->pos_]; + this->limit_ = zzip_read (this->infile_, this->buf_ + i, + sizeof (this->buf_) - i); + this->limit_ += i; + if (this->limit_ == 0) + return -1; + this->pos_ = 0; + return this->buf_[this->pos_ + offset]; +} + +int +ACEXML_ZipCharStream::read (ACEXML_Char *str, size_t len) +{ + for (size_t i = 0; i < len && this->pos_ < this->limit_; ++i) + str[i] = this->buf_[this->pos_++]; + if (i == len) + return len; + len = len - i; + return zzip_fread (str + i, sizeof (ACEXML_Char), len, this->infile_); +} + +int +ACEXML_ZipCharStream::get (ACEXML_Char& ch) +{ +#if defined (ACE_USES_WCHAR) + return this->get_i (ch); +#else + return this->getchar_i (ch); +#endif /* ACE_USES_WCHAR */ +} + + +int +ACEXML_ZipCharStream::peek (void) +{ +#if defined (ACE_USES_WCHAR) + return this->peek_i(); +#else + return this->peekchar_i(); +#endif /* ACE_USES_WCHAR */ +} + +const ACEXML_Char* +ACEXML_ZipCharStream::getEncoding (void) +{ + return this->encoding_; +} + +#if defined (ACE_USES_WCHAR) +int +ACEXML_ZipCharStream::get_i (ACEXML_Char& ch) +{ + if (ACE_OS::strcmp (this->encoding_, ACE_TEXT ("UTF-8")) == 0) + return this->getchar_i (ch); + + int BE = (ACE_OS::strcmp (this->encoding_, + ACE_TEXT ("UTF-16BE")) == 0) ? 1 : 0; + ACEXML_Char input[2]; + int i = 0; + for (; i < 2 && (this->getchar_i (input[i]) == 0); ++i) + ; + if (i < 2) + { + ch = 0; + return -1; + } + ch = BE ? input[0] << 8 | input[1] : input[1] << 8 | input[0]; + return 0; +} + +int +ACEXML_ZipCharStream::peek_i (void) +{ + // If we are reading a UTF-8 encoded file, just use the plain unget. + if (ACE_OS::strcmp (this->encoding_, ACE_TEXT ("UTF-8")) == 0) + return this->peekchar_i(); + + // Peek into the stream. This reads two characters off the stream, keeps + // it in peek_. + int BE = (ACE_OS::strcmp (this->encoding_, + ACE_TEXT ("UTF-16BE")) == 0) ? 1 : 0; + + ACEXML_Char input[2]; + int i = 0; + for (; i < 2 && (input[i] = this->peekchar_i (i)); ++i) + ; + if (i < 2) + return -1; + return (BE ? input[0] << 8 | input[1] : input[1] << 8 | input[0]); +} +#endif /* ACE_USES_WCHAR */ |