76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* Copyright (C) 2005 Junio C Hamano
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*/
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#include "cache.h"
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/*
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* This array must be sorted by its canonical name, because
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* we do look-up by binary search.
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*/
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static struct backward_compatible_env {
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const char *canonical;
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const char *old;
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} bc_name[] = {
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{ "GIT_ALTERNATE_OBJECT_DIRECTORIES", "SHA1_FILE_DIRECTORIES" },
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{ "GIT_AUTHOR_DATE", "AUTHOR_DATE" },
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{ "GIT_AUTHOR_EMAIL", "AUTHOR_EMAIL" },
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{ "GIT_AUTHOR_NAME", "AUTHOR_NAME" },
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{ "GIT_COMMITTER_EMAIL", "COMMIT_AUTHOR_EMAIL" },
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{ "GIT_COMMITTER_NAME", "COMMIT_AUTHOR_NAME" },
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{ "GIT_OBJECT_DIRECTORY", "SHA1_FILE_DIRECTORY" },
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};
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static void warn_old_environment(int pos)
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{
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int i;
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static int warned = 0;
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if (warned)
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return;
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warned = 1;
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fprintf(stderr,
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"warning: Attempting to use %s\n",
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bc_name[pos].old);
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fprintf(stderr,
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"warning: GIT environment variables have been renamed.\n"
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"warning: Please adjust your scripts and environment.\n");
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for (i = 0; i < sizeof(bc_name) / sizeof(bc_name[0]); i++) {
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/* warning is needed only when old name is there and
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* new name is not.
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*/
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if (!getenv(bc_name[i].canonical) && getenv(bc_name[i].old))
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fprintf(stderr, "warning: old %s => new %s\n",
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bc_name[i].old, bc_name[i].canonical);
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}
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}
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char *gitenv_bc(const char *e)
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{
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int first, last;
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char *val = getenv(e);
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if (val)
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die("gitenv_bc called on existing %s; fix the caller.", e);
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first = 0;
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last = sizeof(bc_name) / sizeof(bc_name[0]);
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while (last > first) {
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int next = (last + first) >> 1;
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int cmp = strcmp(e, bc_name[next].canonical);
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if (!cmp) {
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val = getenv(bc_name[next].old);
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/* If the user has only old name, warn.
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* otherwise stay silent.
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*/
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if (val)
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warn_old_environment(next);
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return val;
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}
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if (cmp < 0) {
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last = next;
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continue;
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}
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first = next+1;
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}
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return NULL;
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}
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