diff options
Diffstat (limited to 'pith/handle.c')
| -rw-r--r-- | pith/handle.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/pith/handle.c b/pith/handle.c new file mode 100644 index 00000000..cf6fec57 --- /dev/null +++ b/pith/handle.c @@ -0,0 +1,169 @@ +#if !defined(lint) && !defined(DOS) +static char rcsid[] = "$Id: handle.c 769 2007-10-24 00:15:40Z hubert@u.washington.edu $"; +#endif + +/* + * ======================================================================== + * Copyright 2006-2007 University of Washington + * Copyright 2013 Eduardo Chappa + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * ======================================================================== + */ + +#include "../pith/headers.h" +#include "../pith/handle.h" +#include "../pith/mailview.h" + + +HANDLE_S * +get_handle(HANDLE_S *handles, int key) +{ + HANDLE_S *h; + + if((h = handles) != NULL){ + for( ; h ; h = h->next) + if(h->key == key) + return(h); + + for(h = handles->prev ; h ; h = h->prev) + if(h->key == key) + return(h); + } + + return(NULL); +} + + +void +init_handles(HANDLE_S **handlesp) +{ + if(handlesp) + *handlesp = NULL; + + (void) url_external_specific_handler(NULL, 0); +} + + + +HANDLE_S * +new_handle(HANDLE_S **handlesp) +{ + HANDLE_S *hp, *h = NULL; + + if(handlesp){ + h = (HANDLE_S *) fs_get(sizeof(HANDLE_S)); + memset(h, 0, sizeof(HANDLE_S)); + + /* Put it in the list */ + if((hp = *handlesp) != NULL){ + while(hp->next) + hp = hp->next; + + h->key = hp->key + 1; + hp->next = h; + h->prev = hp; + } + else{ + /* Assumption #2,340: There are NO ZERO KEY HANDLES */ + h->key = 1; + *handlesp = h; + } + } + + return(h); +} + + +/* + * Normally we ignore the is_used bit in HANDLE_S. However, if we are + * using the delete_quotes filter, we pay attention to it. All of the is_used + * bits are off by default, and the delete_quotes filter turns them on + * if it is including lines with those handles. + * + * This is a bit of a crock, since it depends heavily on the order of the + * filters. Notice that the charset_editorial filter, which comes after + * delete_quotes and adds a handle, has to explicitly set the is_used bit! + */ +void +delete_unused_handles(HANDLE_S **handlesp) +{ + HANDLE_S *h, *nexth; + + if(handlesp && *handlesp && (*handlesp)->using_is_used){ + for(h = *handlesp; h && h->prev; h = h->prev) + ; + + for(; h; h = nexth){ + nexth = h->next; + if(h->is_used == 0){ + if(h == *handlesp) + *handlesp = nexth; + + free_handle(&h); + } + } + } +} + + +void +free_handle(HANDLE_S **h) +{ + if(h){ + if((*h)->next) /* clip from list */ + (*h)->next->prev = (*h)->prev; + + if((*h)->prev) + (*h)->prev->next = (*h)->next; + + if((*h)->type == URL){ /* destroy malloc'd data */ + if((*h)->h.url.path) + fs_give((void **) &(*h)->h.url.path); + + if((*h)->h.url.tool) + fs_give((void **) &(*h)->h.url.tool); + + if((*h)->h.url.name) + fs_give((void **) &(*h)->h.url.name); + } + + free_handle_locations(&(*h)->loc); + + fs_give((void **) h); + } +} + + +void +free_handles(HANDLE_S **handlesp) +{ + HANDLE_S *h; + + if(handlesp && *handlesp){ + while((h = (*handlesp)->next) != NULL) + free_handle(&h); + + while((h = (*handlesp)->prev) != NULL) + free_handle(&h); + + free_handle(handlesp); + } +} + + +void +free_handle_locations(POSLIST_S **l) +{ + if(*l){ + free_handle_locations(&(*l)->next); + fs_give((void **) l); + } +} + + |