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hush: code shrink by Dan Fandrich (dan AT coneharvesters.com)
function old new delta find_function_slot - 47 +47 run_list 2508 2491 -17 find_function 40 8 -32 builtin_unset 227 165 -62 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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parent
3a0f6f2328
commit
873273da94
72
shell/hush.c
72
shell/hush.c
@ -3079,15 +3079,21 @@ static const struct built_in_command* find_builtin(const char *name)
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}
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#if ENABLE_HUSH_FUNCTIONS
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static const struct function *find_function(const char *name)
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static struct function **find_function_slot(const char *name)
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{
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const struct function *funcp = G.top_func;
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while (funcp) {
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if (strcmp(name, funcp->name) == 0) {
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struct function **funcpp = &G.top_func;
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while (*funcpp) {
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if (strcmp(name, (*funcpp)->name) == 0) {
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break;
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}
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funcp = funcp->next;
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funcpp = &(*funcpp)->next;
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}
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return funcpp;
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}
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static const struct function *find_function(const char *name)
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{
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const struct function *funcp = *find_function_slot(name);
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if (funcp)
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debug_printf_exec("found function '%s'\n", name);
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return funcp;
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@ -3096,18 +3102,11 @@ static const struct function *find_function(const char *name)
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/* Note: takes ownership on name ptr */
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static struct function *new_function(char *name)
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{
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struct function *funcp;
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struct function **funcpp = &G.top_func;
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struct function **funcpp = find_function_slot(name);
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struct function *funcp = *funcpp;
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while ((funcp = *funcpp) != NULL) {
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struct command *cmd;
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if (strcmp(funcp->name, name) != 0) {
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funcpp = &funcp->next;
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continue;
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}
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cmd = funcp->parent_cmd;
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if (funcp != NULL) {
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struct command *cmd = funcp->parent_cmd;
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debug_printf_exec("func %p parent_cmd %p\n", funcp, cmd);
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if (!cmd) {
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debug_printf_exec("freeing & replacing function '%s'\n", funcp->name);
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@ -3129,39 +3128,36 @@ static struct function *new_function(char *name)
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cmd->group_as_string = funcp->body_as_string;
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# endif
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}
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goto skip;
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} else {
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debug_printf_exec("remembering new function '%s'\n", name);
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funcp = *funcpp = xzalloc(sizeof(*funcp));
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/*funcp->next = NULL;*/
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}
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debug_printf_exec("remembering new function '%s'\n", name);
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funcp = *funcpp = xzalloc(sizeof(*funcp));
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/*funcp->next = NULL;*/
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skip:
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funcp->name = name;
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return funcp;
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}
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static void unset_func(const char *name)
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{
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struct function *funcp;
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struct function **funcpp = &G.top_func;
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struct function **funcpp = find_function_slot(name);
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struct function *funcp = *funcpp;
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while ((funcp = *funcpp) != NULL) {
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if (strcmp(funcp->name, name) == 0) {
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*funcpp = funcp->next;
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/* funcp is unlinked now, deleting it.
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* Note: if !funcp->body, the function was created by
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* "-F name body", do not free ->body_as_string
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* and ->name as they were not malloced. */
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if (funcp->body) {
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free_pipe_list(funcp->body);
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free(funcp->name);
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if (funcp != NULL) {
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debug_printf_exec("freeing function '%s'\n", funcp->name);
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*funcpp = funcp->next;
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/* funcp is unlinked now, deleting it.
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* Note: if !funcp->body, the function was created by
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* "-F name body", do not free ->body_as_string
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* and ->name as they were not malloced. */
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if (funcp->body) {
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free_pipe_list(funcp->body);
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free(funcp->name);
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# if !BB_MMU
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free(funcp->body_as_string);
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free(funcp->body_as_string);
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# endif
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}
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free(funcp);
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break;
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}
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funcpp = &funcp->next;
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free(funcp);
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}
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}
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