commit: f6d31778569b3bb53a743515a8993aa64cdf0bfe
Author: Fabian Groffen <grobian <AT> gentoo <DOT> org>
AuthorDate: Mon May 25 10:28:35 2020 +0000
Commit: Fabian Groffen <grobian <AT> gentoo <DOT> org>
CommitDate: Mon May 25 10:28:35 2020 +0000
URL: https://gitweb.gentoo.org/proj/portage-utils.git/commit/?id=f6d31778
libq/atom: add atom_clone function
atom_clone() does a deep copy of the given atom, such that it lives
completely on its own and needs its own atom_implode() call.
Signed-off-by: Fabian Groffen <grobian <AT> gentoo.org>
libq/atom.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
libq/atom.h | 1 +
2 files changed, 107 insertions(+)
diff --git a/libq/atom.c b/libq/atom.c
index e79c30a..7e72bf3 100644
--- a/libq/atom.c
+++ b/libq/atom.c
@@ -355,6 +355,112 @@ atom_explode(const char *atom)
return ret;
}
+depend_atom *
+atom_clone(depend_atom *atom)
+{
+ depend_atom *ret;
+ char *p;
+ size_t alen;
+ size_t clen = 0;
+ size_t flen = 0;
+ size_t plen = 0;
+ size_t nlen = 0;
+ size_t slen = 0;
+ size_t rlen = 0;
+
+ if (atom->REPO != NULL)
+ rlen = strlen(atom->REPO) + 1;
+ if (atom->SLOT != NULL)
+ slen = strlen(atom->SLOT) + 1;
+ if (atom->CATEGORY != NULL)
+ clen = strlen(atom->CATEGORY) + 1;
+ if (atom->PF != NULL)
+ flen = strlen(atom->PF) + 1; /* should include PVR */
+ if (atom->P != NULL)
+ plen = strlen(atom->P) + 1; /* should include PV */
+ if (atom->PN != NULL)
+ nlen = strlen(atom->PN) + 1;
+
+ alen = sizeof(*ret) + clen + flen + plen + nlen + rlen + slen;
+ ret = xmalloc(alen);
+ memset(ret, '\0', sizeof(*ret));
+
+ /* build up main storage pointers, see explode */
+ p = (char *)ret + sizeof(*ret);
+ if (atom->CATEGORY != NULL) {
+ ret->CATEGORY = p;
+ memcpy(ret->CATEGORY, atom->CATEGORY, clen);
+ p += clen;
+ }
+ if (atom->PF != NULL) {
+ ret->PF = p;
+ memcpy(ret->PF, atom->PF, flen);
+ p += flen;
+ }
+ if (atom->PVR > atom->PF && atom->PVR < (atom->PF + flen))
+ ret->PVR = ret->PF + (atom->PVR - atom->PF);
+ if (atom->P != NULL) {
+ ret->P = p;
+ memcpy(ret->P, atom->P, plen);
+ p += plen;
+ }
+ if (atom->PV > atom->P && atom->PV < (atom->P + plen))
+ ret->PV = ret->P + (atom->PV - atom->P);
+ if (atom->PN != NULL) {
+ ret->PN = p;
+ memcpy(ret->PN, atom->PN, nlen);
+ p += nlen;
+ }
+ if (atom->SLOT != NULL) {
+ ret->SLOT = p;
+ memcpy(ret->SLOT, atom->SLOT, slen);
+ p += slen;
+ }
+ if (atom->SUBSLOT > atom->SLOT && atom->SUBSLOT < (atom->SLOT + slen))
+ ret->SUBSLOT = ret->SLOT + (atom->SUBSLOT - atom->SLOT);
+ if (atom->REPO != NULL) {
+ ret->REPO = p;
+ memcpy(ret->REPO, atom->REPO, rlen);
+ p += rlen;
+ }
+
+ ret->blocker = atom->blocker;
+ ret->pfx_op = atom->pfx_op;
+ ret->sfx_op = atom->pfx_op;
+ ret->PR_int = atom->PR_int;
+ ret->letter = atom->letter;
+ ret->slotdep = atom->slotdep;
+
+ if (atom->suffixes != NULL) {
+ for (slen = 0; atom->suffixes[slen].suffix != VER_NORM; slen++)
+ ;
+ slen++;
+ ret->suffixes = xmalloc(sizeof(ret->suffixes[0]) * slen);
+ memcpy(ret->suffixes, atom->suffixes, sizeof(ret->suffixes[0])
* slen);
+ }
+
+ if (atom->usedeps) {
+ atom_usedep *w;
+ atom_usedep *n = NULL;
+
+ for (w = atom->usedeps; w != NULL; w = w->next) {
+ nlen = w->use != NULL ? strlen(w->use) + 1 : 0;
+ if (n == NULL) {
+ atom->usedeps = n = xmalloc(sizeof(*n) + nlen);
+ } else {
+ n = n->next = xmalloc(sizeof(*n) + nlen);
+ }
+ n->next = NULL;
+ n->pfx_cond = w->pfx_cond;
+ n->sfx_cond = w->sfx_cond;
+ n->use = (char *)n + sizeof(*n);
+ memcpy(n->use, w->use, nlen);
+ }
+ }
+
+ return ret;
+}
+
void
atom_implode(depend_atom *atom)
{
diff --git a/libq/atom.h b/libq/atom.h
index 1548dd9..aff4548 100644
--- a/libq/atom.h
+++ b/libq/atom.h
@@ -97,6 +97,7 @@ typedef enum {
} atom_equality;
depend_atom *atom_explode(const char *atom);
+depend_atom *atom_clone(depend_atom *atom);
void atom_implode(depend_atom *atom);
atom_equality atom_compare(const depend_atom *a1, const depend_atom *a2);
atom_equality atom_compare_str(const char * const s1, const char * const s2);
