C: inputting string of unknown length


 
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# 6  
Old 01-01-2020
I'd just like to add that a good way to use realloc is to assign to a temp variable rather then the variable you are copying from. That way if realloc fails you haven't lost the memory in your original variable. i.e.


Code:
char* tmp = realloc (str, len);
if (tmp == NULL) {
    free (str); // you can free str since you haven't changed the address in realloc
    return NULL; // or something to signal an allocation failure

} 

str = tmp; // the reallocation worked and now we assign tmp to str

-Greg.
 
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MARC::Charset::Code(3pm)				User Contributed Perl Documentation				  MARC::Charset::Code(3pm)

NAME
MARC::Charset::Code - represents a MARC-8/UTF-8 mapping SYNOPSIS
DESCRIPTION
Each mapping from a MARC-8 value to a UTF-8 value is represented by a MARC::Charset::Code object in a MARC::Charset::Table. METHODS
new() The constructor. name() A descriptive name for the code point. marc() A string representing the MARC-8 bytes codes. ucs() A string representing the UCS code point in hex. charset_code() The MARC-8 character set code. is_combining() Returns true/false to tell if the character is a combining character. to_string() A stringified version of the object suitable for pretty printing. char_value() Returns the unicode character. Essentially just a helper around ucs(). marc_value() The string representing the MARC-8 encoding. charset_name() Returns the name of the character set, instead of the code. to_string() Returns a stringified version of the object. marc8_hash_code() Returns a hash code for this Code object for looking up the object using MARC8. First portion is the character set code and the second is the MARC-8 value. utf8_hash_code() Returns a hash code for uniquely identifying a Code by it's UCS value. default_charset_group Returns 'G0' or 'G1' indicating where the character is typicalling used in the MARC-8 environment. get_marc8_escape Returns an escape sequence to move to the Code from another marc-8 character set. charset_value Returns the charset value, not the hex sequence. perl v5.12.4 2010-03-29 MARC::Charset::Code(3pm)