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📄 fn_04.cc

📁 这是一个从音频信号里提取特征参量的程序
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// file: $isip/class/shell/Filename/fn_04.cc// version: $Id: fn_04.cc,v 1.6 2003/05/05 20:59:32 parihar Exp $//// isip include files//#include "Filename.h"#include <String.h>// method: getBase//// arguments://  String& base: (output) the basename component of the filename//// return: a boolean value indicating status//boolean Filename::getBase(String& base_a) const {  if (os_d == UNIX) {    return getBaseUnix(base_a);  }  else {    return Error::handle(name(), L"getBase",                         Error::ARG, __FILE__, __LINE__);  }}// method: getExt//// arguments://  String& ext: (output) the extension component of the filename//// return: a boolean value indicating status//boolean Filename::getExt(String& ext_a) const {  if (os_d == UNIX) {    return getExtUnix(ext_a);  }  else {    return Error::handle(name(), L"getExt",                         Error::ARG, __FILE__, __LINE__);  }}// method: getDir//// arguments://  String& dir: (output) the directory component of the filename//// return: a boolean value indicating status//boolean Filename::getDir(String& dir_a) const {  if (os_d == UNIX) {    return getDirUnix(dir_a);  }  else {    return Error::handle(name(), L"getDir",                         Error::ARG, __FILE__, __LINE__);  }}// method: getSuffix//// arguments://  String& suffix: (output) the suffix component of the filename//// return: a boolean value indicating status//boolean Filename::getSuffix(String& suffix_a) const {  if (os_d == UNIX) {    String tmp;    getName(tmp);    // length of the string value_d    //    long total_length = tmp.length();    // position of the string slash    //    long index = tmp.lastStr(UNDERSCORE);    if (index == 0) {      // no underscore exist, return empty string      //      suffix_a.assign(L"");    }    else {      // return the substring of value_d      //      substr(suffix_a, (index + 1), (total_length - index - 1));    }        return true;    }  else {    return Error::handle(name(), L"getDir",                         Error::ARG, __FILE__, __LINE__);  }}// method: getName//// arguments://  String& filename: (output) the filename (stripped of the directory)//// return: a boolean value indicating status//boolean Filename::getName(String& filename_a) const {  if (os_d == UNIX) {    return getNameUnix(filename_a);  }  else {    return Error::handle(name(), L"getName",                         Error::ARG, __FILE__, __LINE__);  }}// method: getDirDelim//// arguments://  String& arg: (output) the string used to delimit a directory//// return: a boolean value indicating status//boolean Filename::getDirDelim(String& arg_a) const {  if (os_d == UNIX) {    return getDirDelimUnix(arg_a);  }  else {    return Error::handle(name(), L"getDirDelim",                         Error::ARG, __FILE__, __LINE__);  }}// method: getFileDelim//// arguments://  String& arg: (output) the string used to delimit a file extension//// return: a boolean value indicating status//boolean Filename::getFileDelim(String& arg_a) const {  if (os_d == UNIX) {    return getFileDelimUnix(arg_a);  }  else {    return Error::handle(name(), L"getFileDelim",                         Error::ARG, __FILE__, __LINE__);  }}//-----------------------------------------------------------------------------//// operating system specific versions: UNIX////-----------------------------------------------------------------------------// method: getBaseUnix//// arguments://  String& base: (output) the basename component of the filename//// return: a boolean value indicating status//// this method is essentially equivalent to basename(). a filename// of the form "/home/picone/rje/foo.text" will return "foo".//boolean Filename::getBaseUnix(String& base_a) const {  // position from where we have to start trimming  //  long start = lastStr(SLASH);  // position where we stop trimming  //  long end = lastStr(DOT);  // return the substring of value_d  //  substr(base_a, (start + 1), (end - start - 1));  // exit gracefully  //  // exit gracefully  //  return true;  }// method: getExtUnix//// arguments://  String& ext: (output) the extension component of the filename//// return: a boolean value indicating status//// find the extension in the filename.//// this method returns the filename's extension. on Unix, this means// for "/home/picone/rje/foo.text" we return "text".//boolean Filename::getExtUnix(String& ext_a) const {  // total length of the string  //  long total_length = length();  // position of the string dot  //  long index = lastStr(DOT);  // return the substring of value_d  //  substr(ext_a, (index + 1), (total_length - index - 1));  // exit gracefully  //  return true;  }// method: getDirUnix//// arguments://  String& dir: (output) the directory component of the filename//// return: a boolean value indicating status//// this method returns the directory. on Unix, this means// for "/home/picone/rje/foo.text" we return "/home/picone/rje".//boolean Filename::getDirUnix(String& dir_a) const {  // position of the string  //  long index = lastStr(SLASH);  // if index is negative then the directory is the current directory  //  if (index < 0 ) {    dir_a.clear();  }  // else find the corresponding directory  //  else {    substr(dir_a, 0, index);  }  // exit gracefully  //  return true;  }// method: getNameUnix//// arguments://  String& filename: (output) the filename (stripped of the directory)//// return: a boolean value indicating status//// this method returns the basename plus extension.// for "/home/picone/rje/foo.text" we return "foo.text".//boolean Filename::getNameUnix(String& filename_a) const {  // length of the string value_d  //  long total_length = length();    // position of the string slash  //  long index = lastStr(SLASH);    // return the substring of value_d  //  substr(filename_a, (index + 1), (total_length - index - 1));  return true;}// method: getDirDelimUnix//// arguments://  String& arg: (output) the string used to delimit a directory//// return: a boolean value indicating status//// in Unix, this is a SLASH ("/").//boolean Filename::getDirDelimUnix(String& arg_a) const {  return arg_a.assign(SLASH);}// method: getFileDelimUnix//// arguments://  String& arg: (output) the string used to delimit a file extension//// return: a boolean value indicating status//// in Unix, this is a DOT (".").//boolean Filename::getFileDelimUnix(String& arg_a) const {  return arg_a.assign(DOT);}//-----------------------------------------------------------------------------//// operating system specific versions: WINDOWS////-----------------------------------------------------------------------------// method: getBaseWin//// arguments://  String& base: (output) the basename component of the filename//// return: a boolean value indicating status//boolean Filename::getBaseWin(String& base_a) const {  return false;}// method: getExtWin//// arguments://  String& ext: (output) the extension component of the filename//// return: a boolean value indicating status//boolean Filename::getExtWin(String& ext_a) const {  return false;}// method: getDirWin//// arguments://  String& dir: (output) the directory component of the filename//// return: a boolean value indicating status//boolean Filename::getDirWin(String& dir_a) const {  return false;}// method: getNameWin//// arguments://  String& filename: (output) the filename (stripped of the directory)//// return: a boolean value indicating status//boolean Filename::getNameWin(String& filename_a) const {  return false;}// method: getDirDelimWin//// arguments://  String& arg: (output) the string used to delimit a directory//// return: a boolean value indicating status//boolean Filename::getDirDelimWin(String& arg_a) const {  return false;}// method: getFileDelimWin//// arguments://  String& arg: (output) the string used to delimit an extension//// return: a boolean value indicating status//boolean Filename::getFileDelimWin(String& arg_a) const {  return false;}//-----------------------------------------------------------------------------//// operating system specific versions: MACINTOSH////-----------------------------------------------------------------------------// method: getBaseMac//// arguments://  String& base: (output) the basename component of the filename//// return: a boolean value indicating status//boolean Filename::getBaseMac(String& base_a) const {  return false;}// method: getExtMac//// arguments://  String& ext: (output) the extension component of the filename//// return: a boolean value indicating status//boolean Filename::getExtMac(String& ext_a) const {  return false;}// method: getDirMac//// arguments://  String& dir: (output) the directory component of the filename//// return: a boolean value indicating status//boolean Filename::getDirMac(String& dir_a) const {  return false;}// method: getNameMac//// arguments://  String& filename: (output) the filename (stripped of the directory)//// return: a boolean value indicating status//boolean Filename::getNameMac(String& filename_a) const {  return false;}// method: getDirDelimMac//// arguments://  String& arg: (output) the string used to delimit a directory//// return: a boolean value indicating status//boolean Filename::getDirDelimMac(String& arg_a) const {  return false;}// method: getFileDelimMac//// arguments://  String& arg: (output) the string used to delimit a file extension//// return: a boolean value indicating status//boolean Filename::getFileDelimMac(String& arg_a) const {  return false;}

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