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g_build_filename() documentation claims that: On Windows, it takes into account that either the backslash ( \) or slash (/)
can be used
as separator in filenames, but otherwise behaves as on Unix. When
file pathname separators need to be inserted, the one that last
previously occurred in the parameters (reading from left to right)
is used.Reader could imagine that g_build_filename() scans each parameter before appending it to resulting string and looks for path separators. The last path separator found in a parameter is then used as path separator between current parameter and next parameter (it might be that if next parameter starts with a path separator, then none is inserted, but that's besides the point). However, in reality it's quite different. Instead of scanning each parameter, g_build_filename() (actually, it's g_build_pathname_va(), but that's besides the point) looks in a parameter for the first continuous set of separators and the last set of continuous separators (that is, in a string "//\\\/\//abcd//ef//gh//ij\\\/\/\///" that would be "//\\\/\//" and "\\\/\/\///") and assigns the last separator of the first set or (if it is present) the first separator of the last set as current separator (in case of "//\\\/\//abcd//ef//gh//ij\\\/\/\///" that would be '\\', assuming that double backslash is an escaped form of single backslash). That is, if you call g_build_filename("c:/dir/subdir", "filename", NULL), you'll get "c:/dir/subdir\\filename" as a result. |
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