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Edinburgh Speech Tools Library
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Chapter 7. Utility Functions

Utility Classes and Functions

Table of Contents
class EST_Token{}
Construction and Initialisation
Basic access to fields
Token Access
Operators
Utility Functions for strings
StringtoStrList()
BracketStringtoStrList()
load_StrList()
save_StrList()
strip_quotes()
itoString()
ftoString()
Stringtoi()
StrListtoIList()
StrListtoFList()
StrList_to_StrVector()
StrVector_to_StrList()
StrVector_index()
strlist_member()
strlist_index()
basename()
Utility functions for I/O
make_tmp_filename()
stdin_to_file()
writable_file()
readable_file()
delete_file()
uncompress_file_to_temporary()
compress_file_in_place()
compress_file()

class EST_Token{}

class EST_Token

This class is similar to EST_String but also maintains the original punctuation and whitespace found around the token.

EST_Token's primary use is with EST_TokenStream class which allows easy tokenizing of ascii files.

A token consists of four parts, any of which may be empty: a name, the actual token, preceding whitespace, preceding punctuation, the name and succeeding punctuation.

Construction and Initialisation

EST_Token()

EST_Token()

EST_Token()

EST_Token(const EST_String p)

init()

void init()

Basic access to fields

set_token()

void set_token(const EST_String &p)

set token from a string

set_token()

void set_token(const char *p)

set_whitespace()

void set_whitespace(const EST_String &p)

set whitespace of token.

set_whitespace()

void set_whitespace(const char *p)

set_punctuation()

void set_punctuation(const EST_String &p)

set (post) punctuation of token.

set_punctuation()

void set_punctuation(const char *p)

set_prepunctuation()

void set_prepunctuation(const EST_String &p)

set prepunction

set_prepunctuation()

void set_prepunctuation(const char *p)

whitespace()

const EST_String& whitespace()

punctuation()

const EST_String& punctuation()

prepunctuation()

const EST_String& prepunctuation()

Token Access

string()

const EST_String& string() const

Access token as a string

S()

const EST_String& S() const

Access token as a string

String()

const EST_String& String() const

Access token as a string

operator EST_String()

operator EST_String() const

For automatic coercion to a EST_String

Int()

int Int(bool &valid) const

Access token as an int

Int()

int Int() const

Access token as an int

I()

int I(bool &valid) const

Access token as an int

I()

int I() const

Access token as an int

operator int()

operator int() const

Access token as an int

Long()

long Long(bool &valid) const

Access token as a long

Long()

long Long() const

Access token as a long

L()

long L(bool &valid) const

Access token as a long

L()

long L() const

Access token as a long

operator long()

operator long() const

Access token as a long

Float()

float Float(bool &valid) const

Access token as a float

Float()

float Float() const

Access token as a float

F()

float F(bool &valid) const

Access token as a float

F()

float F() const

Access token as a float

operator float()

operator float() const

Access token as a float

Double()

double Double(bool &valid) const

Access token as a double

Double()

double Double() const

Access token as a double

D()

double D(bool &valid) const

Access token as a double

D()

double D() const

Access token as a double

operator double()

operator double() const

Access token as a double

set_quoted()

void set_quoted(int q)

Note that this token was quoted (or not)

quoted()

int quoted() const

TRUE is token was quoted

set_row()

void set_row(int r)

set row

set_col()

void set_col(int c)

set column

set_filepos()

void set_filepos(int c)

Set file position in original \Ref{EST_TokenStream}

lstring()

EST_String lstring()

Return lower case version of token name

ustring()

EST_String ustring()

Return upper case version of token name

row()

int row(void) const

Line number in original EST_TokenStream.

col()

int col(void) const

Line position in original EST_TokenStream.

filepos()

int filepos(void) const

file position in original EST_TokenStream.

pos_description()

const EST_String pos_description() const

A string describing current position, suitable for error messages

Operators

operator = ()

EST_Token& operator = (const EST_Token &a)

operator = ()

EST_Token& operator = (const EST_String &a)

operator == ()

int operator == (const EST_String &a)

operator != ()

int operator != (const EST_String &a)

operator == ()

int operator == (const char *a)

operator != ()

int operator != (const char *a)

Utility Functions for strings

StringtoStrList()

void StringtoStrList(EST_String s, EST_StrList &l, EST_String sep="")

Convert a EST_String to a EST_StrList by separating tokens in s delimited by the separator sep. By default, the string is assumed to be delimited by whitespace.

BracketStringtoStrList()

void BracketStringtoStrList(EST_String s, EST_StrList &l, EST_String sep="")

Convert a EST_String enclosed in a single set of brackets to a EST_StrList by separating tokens in s delimited by the separator sep. By default, the string is assumed to be delimited by whitespace.

load_StrList()

EST_read_status load_StrList(EST_String filename, EST_StrList &l)

Load tokens from a file and return them in a EST_StrList

save_StrList()

EST_write_status save_StrList(EST_String filename, EST_StrList &l, EST_String style="words")

Save tokens from a EST_StrList. If style is set to "lines" each item is stored on a separate line, otherwise each item is separated by a single space

strip_quotes()

void strip_quotes(EST_String &s, const EST_String quote_char="\"")

remove quotes from a string

itoString()

EST_String itoString(int n)

Make a EST_String object from an integer

ftoString()

EST_String ftoString(float n, int pres=3, int width=0, int l=0)

Make a EST_String object from an float, with variable precision

Stringtoi()

int Stringtoi(EST_String s)

Make an int from a EST_String. EST_String equivalent of atoi()

StrListtoIList()

int StrListtoIList(EST_StrList &s, EST_IList &il)

Convert a list of strings to a list of integers

StrListtoFList()

int StrListtoFList(EST_StrList &s, EST_FList &il)

Convert a list of strings to a list of floats

StrList_to_StrVector()

void StrList_to_StrVector(EST_StrList &l, EST_StrVector &v)

Convert a list of strings to a vector of strings

StrVector_to_StrList()

void StrVector_to_StrList(EST_StrVector &v, EST_StrList &l)

Convert a vector of strings to a list of strings

StrVector_index()

int StrVector_index(const EST_StrVector &v, const EST_String &s)

Search the vector and return the position of the first occurance of string s in the vector

strlist_member()

int strlist_member(const EST_StrList &l, const EST_String &s)

Return true ifs is in list ls

strlist_index()

int strlist_index(const EST_StrList &l, const EST_String &s)

Search the vector and return the position of the first occurance of string s in the list

basename()

EST_String basename(EST_String full, EST_String ext="")

This acts like the bourne shell basename command. By default, it strips any leading path from a string. If ext is defined, it strips any suffix matching this string

Utility functions for I/O

make_tmp_filename()

EST_String make_tmp_filename()

Make a unique temporary filename

stdin_to_file()

EST_String stdin_to_file()

Copy stdin to a file and return the name of that tmpfile

writable_file()

int writable_file(char *filename)

return true if this file is writeable

readable_file()

int readable_file(char *filename)

return true if this file is readable

delete_file()

inline int delete_file(const EST_String &filename)

OS independent way of removing a file

uncompress_file_to_temporary()

EST_String uncompress_file_to_temporary(const EST_String &filename, const EST_String &prog_name)

Uncompress file by calling program prog, and write it to new tempoary file. Return name of temporary file

compress_file_in_place()

int compress_file_in_place(const EST_String &filename, const EST_String &prog_name)

Uncompress file and over-write existing file with uncompressed version

compress_file()

int compress_file(const EST_String &filename, const EST_String &new_filename, const EST_String &prog_name)

compress file by calling program prog, writing result to new_filename

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