Reference/!searchparse

!searchparse

[/ignorecase] [/noerrors] [/file] source_string_or_file substring_start OUTPUTSYMBOL1 [substring [OUTPUTSYMBOL2 [substring ...]]]

Parses source_string_or_file (which is treated as a string, or as a filename if /file is set), looking for substring_start. If substring_start is found, then OUTPUTSYMBOL1 is defined to the rest of the string (minus any other substring that may be found). Any number of OUTPUTSYMBOLx may be specified, and the final substring is optional.

If /noerrors is specified, matching less than the full number of strings is allowed (all OUTPUTSYMBOLx after the not-found substring will be ignored).

If /file is specified, the file is treated as a series of lines. The file is searched until all substrings are matched. If /noerrors is specified and not all strings are matched, the first line with the most symbols matched is used.

# search filename.cpp for a line '#define APP_VERSION "2.5"' and set ${VER_MAJOR} to 2, ${VER_MINOR} to 5.
!searchparse /file filename.cpp `#define APP_VERSION "` VER_MAJOR `.` VER_MINOR `"`

Command introduced with NSIS v2.39