From b19be3cca1a839593c952e0bb17b11119a2e6436 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?= Date: Thu, 26 Jul 2007 10:24:38 +0000 Subject: added more list operating objects svn path=/trunk/externals/zexy/; revision=8246 --- src/listfind.c | 200 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 200 insertions(+) create mode 100644 src/listfind.c (limited to 'src/listfind.c') diff --git a/src/listfind.c b/src/listfind.c new file mode 100644 index 0000000..693181f --- /dev/null +++ b/src/listfind.c @@ -0,0 +1,200 @@ +/****************************************************** + * + * zexy - implementation file + * + * copyleft (c) IOhannes m zmölnig + * + * 1999:forum::für::umläute:2004 + * + * institute of electronic music and acoustics (iem) + * + ****************************************************** + * + * license: GNU General Public License v.2 + * + ******************************************************/ + +/* 2607:forum::für::umläute:2007 */ + + +#include "zexy.h" +#include + +//#define DEBUG + +#ifdef DEBUG +# define DEBUGFUN(x) x +#else +# define DEBUGFUN(x) +#endif + + +/* ------------------------- listfind ------------------------------- */ + +/* find a sublist in a list and return the index of the occurence (or indices if there are more) */ + +static t_class *listfind_class; + + +typedef struct _listfind +{ + t_object x_obj; + t_outlet *x_outlet; + + int x_n; + + t_inlet*x_listin; + int x_argc; + t_atom *x_argv; +} t_listfind; + + + +static void listfind_list2(t_listfind*x,t_symbol*s, int argc, t_atom*argv) +{ + if(x->x_argv!=0) { + freebytes(x->x_argv, sizeof(t_atom)*x->x_argc); + } + x->x_argc=0; + x->x_argv=0; + + DEBUGFUN(post("list of length %d", argc)); + + if(argc>0) { + int i; + x->x_argc=argc; + x->x_argv=(t_atom*)getbytes((x->x_argc)*sizeof(t_atom)); + for(i=0; ix_argv[i]=argv[i]; + } + } + + DEBUGFUN(post("list2: %d %x", x->x_argc, x->x_argv)); +} + +static int atom_equals(t_atom*a1, t_atom*a2) { + if(a1->a_type!=a2->a_type) return 0; + + return(a1->a_w.w_symbol==a2->a_w.w_symbol); +} + +static int list_equals(int count, t_atom*a1, t_atom*a2) { + int i=0; + for(i=0; ia_type!=a2->a_type) + return 0; + if(a1->a_w.w_symbol!=a2->a_w.w_symbol) // is it that simple? + return 0; + } + return 1; +} + +static int listfind_find(int argc, t_atom*argv, int matchc, t_atom*matchv) { + int i=0; + + if(matchc>argc) + return -1; + if(matchc==0) + return 0; + + for(i=0; i<=(argc-matchc); i++, argv++) { + if(list_equals(matchc, argv, matchv)) + return i; + } + return -1; +} + +static void listfind_doit(t_outlet*out, int longcount, t_atom*longlist, int patterncount, t_atom*patternlist) { + int count=0; + int index; + int offset=0; + + t_atom*ap=0; + int length=1+((patterncount>0)?(longcount/patterncount):longcount); /* we shan't have more hits than this! */ + if(length<1) { + outlet_bang(out); + } + ap=(t_atom*)getbytes(length*sizeof(t_atom)); + + DEBUGFUN(post("expecting no more than %d results", length)); + + while((index=listfind_find(longcount-offset, longlist+offset, patterncount, patternlist))>=0) { + offset+=index; + SETFLOAT(ap+count, offset); + + count++; + + DEBUGFUN(post("new offset=%d", offset)); + offset++; // proceed to the next element + } + + DEBUGFUN(post("got %d results", count)); + + outlet_list(out, gensym("list"), count, ap); + freebytes(ap, length*sizeof(t_atom)); +} + +static void listfind_list(t_listfind *x, t_symbol *s, int argc, t_atom *argv) +{ +#if 0 + /* entire list hot: + * this is more intuitive when searching a pattern in many lists + */ + listfind_doit(x->x_obj.ob_outlet, argc, argv, x->x_argc, x->x_argv); + +#else + + /* pattern is hot + * this is compatible with foobar's [list-find] + * this is more intuitive when searching different patterns in a list + */ + listfind_doit(x->x_obj.ob_outlet, x->x_argc, x->x_argv, argc, argv); + +#endif + + /* personally i think that searching 1 pattern in many lists is more useful */ +} + +static void listfind_free(t_listfind *x) +{ + if(x->x_argv) { + freebytes(x->x_argv, x->x_argc*sizeof(int)); + x->x_argv=0; + x->x_argc=0; + } + inlet_free(x->x_listin); + +} + +static void *listfind_new(t_symbol *s, int argc, t_atom *argv) +{ + t_listfind *x = (t_listfind *)pd_new(listfind_class); + ZEXY_USEVAR(s); + + outlet_new(&x->x_obj, 0); + x->x_listin=inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym("lst2")); + + x->x_argc=0; + x->x_argv=0; + + listfind_list2(x, gensym("list"), argc, argv); + + return (x); +} + + +static void listfind_help(t_listfind*x) +{ + post("\n%c listfind\t\t:: split lists into multiple sublists based on matches", HEARTSYMBOL); +} + +void listfind_setup(void) +{ + listfind_class = class_new(gensym("listfind"), (t_newmethod)listfind_new, + (t_method)listfind_free, sizeof(t_listfind), 0, A_GIMME, 0); + class_addlist (listfind_class, listfind_list); + class_addmethod (listfind_class, (t_method)listfind_list2, gensym("lst2"), A_GIMME, 0); + + class_addmethod(listfind_class, (t_method)listfind_help, gensym("help"), A_NULL); + zexy_register("listfind"); +} -- cgit v1.2.1