I want to make a script that add a file ID number at every .C and .H file. This is used to identity from which file a error message is generated.
So every file has a unique number like:
fileID (magic)
The problem is this only needs to exits in that file. Because every file have it's own.
edit: I need a number and not a string. So __FILE__ doesn't work.
I generally use this macro for my error messages:
#define P_ERR(format, ...) \
fprintf(stderr, "%s:%d:%s: " format "\n", __FILE__, __LINE__, strerror(errno), ##__VA_ARGS__)
You can read about all such macros in the docs.
Specific for __FILE__:
__FILE__This macro expands to the name of the current input file, in the form of a C string constant. This is the path by which the preprocessor opened the file, not the short name specified in ‘#include’ or as the input file name argument. For example, "/usr/local/include/myheader.h" is a possible expansion of this macro.