simon-git: msvc-extract (main): Simon Tatham

[Commits to Tartarus hosted VCS]

TL;DR:
  874e3a8 Factor out check_trie_path.
  94948ae Rename 'headersymlink' to something more generic.
  6ecf98d Call makesymlinks for libs too.
  e9ae8c5 New option --aliases, to read a list of file aliases.

Repository:     https://git.tartarus.org/simon/msvc-extract.git
On the web:     https://git.tartarus.org/?p=simon/msvc-extract.git
Branch updated: main
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2021-06-02 14:05:47

commit 874e3a86818fa40697c2441fd77a9ef01f94c9f4
web diff https://git.tartarus.org/?p=simon/msvc-extract.git;a=commitdiff;h=874e3a86818fa40697c2441fd77a9ef01f94c9f4;hp=afe71dd006146b71cb1d36eb5435ca33cfe5e42f
Author: Simon Tatham <anakin at pobox.com>
Date:   Wed Jun 2 13:44:36 2021 +0100

    Factor out check_trie_path.
    
    This function is extracted from the middle of headerscan(), and
    contains the part that receives an arbitrary Windows-like pathname
    (with case and slashes any old way), normalises it into a lowercase
    pathname with Unix slashes, and inserts symlinks as necessary into
    trie_outer to ensure that the former pathname will resolve to the
    latter.
    
    No functional change: this just rearranges existing code, with the
    intention that check_trie_path will now be callable from other
    contexts as well.

 msvc-extract.c | 211 ++++++++++++++++++++++++++++++---------------------------
 1 file changed, 110 insertions(+), 101 deletions(-)

commit 94948ae402f15b8cb3d3ce493692a1365523cace
web diff https://git.tartarus.org/?p=simon/msvc-extract.git;a=commitdiff;h=94948ae402f15b8cb3d3ce493692a1365523cace;hp=874e3a86818fa40697c2441fd77a9ef01f94c9f4
Author: Simon Tatham <anakin at pobox.com>
Date:   Wed Jun 2 13:45:14 2021 +0100

    Rename 'headersymlink' to something more generic.
    
    I'm going to want to use it for libraries as well as headers, so I've
    renamed it 'outputsymlink', and the same goes for its context
    structure. And 'headermodify', the function that calls it, is now
    called 'makesymlinks' for the same reason.

 msvc-extract.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

commit 6ecf98d3d5f143addc3d05f8c00431d0a2ed61eb
web diff https://git.tartarus.org/?p=simon/msvc-extract.git;a=commitdiff;h=6ecf98d3d5f143addc3d05f8c00431d0a2ed61eb;hp=94948ae402f15b8cb3d3ce493692a1365523cace
Author: Simon Tatham <anakin at pobox.com>
Date:   Wed Jun 2 13:45:53 2021 +0100

    Call makesymlinks for libs too.
    
    Now, if the trie indicates that any library file needs to be accessed
    via a non-normalised pathname, the same symlink-making machinery will
    run at tar output time to ensure that's possible.
    
    As yet, no entries of that sort will show up in the trie. But the next
    commit will make that possible.

 msvc-extract.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

commit e9ae8c5e78d25686bdb2aeedca2a50b552ebc273
web diff https://git.tartarus.org/?p=simon/msvc-extract.git;a=commitdiff;h=e9ae8c5e78d25686bdb2aeedca2a50b552ebc273;hp=6ecf98d3d5f143addc3d05f8c00431d0a2ed61eb
Author: Simon Tatham <anakin at pobox.com>
Date:   Wed Jun 2 13:49:20 2021 +0100

    New option --aliases, to read a list of file aliases.
    
    The header and library directories output by this tool assume that
    you'll be #including headers, and linking against libraries, by
    lowercase names containing Unix-style directory separators (if any
    separators are even needed). Symlinks are written into the tar file to
    cope with violations of this principle within the MSVC header files
    themselves. But additional violations outside the MSVC headers have
    hitherto been regarded as the user's problem to edit out of their
    application code.
    
    But what if the user is trying to compile third-party library code
    into their application, which they can't (conveniently) edit, but
    which also isn't detected by msvc-extract and compensated for? It may
    be necessary for additional mixed-case and/or mixed-slash pathnames to
    be made to work, to support a particular code base.
    
    The new --aliases option enables this. You provide it with a text file
    listing pathnames of header files and/or libraries that you need to
    work, and it will insert symlinks as appropriate. For example, you
    might write lines that say
    
    Ws2tcpip.h
    AdvAPI.lib
    
    and you'd get a tar file that makes each of those a symlink to its
    lowercase version, just as if one of MSVC's own headers had referred
    to the file by the mixed-case name.

 README.txt     | 64 +++++++++++++++++++++++++++++++++++++++++-----------------
 msvc-extract.c | 38 ++++++++++++++++++++++++++++++++--
 2 files changed, 81 insertions(+), 21 deletions(-)