i3
src/load_layout.c
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00001 /*
00002  * vim:ts=4:sw=4:expandtab
00003  *
00004  */
00005 #include <yajl/yajl_common.h>
00006 #include <yajl/yajl_gen.h>
00007 #include <yajl/yajl_parse.h>
00008 #include <yajl/yajl_version.h>
00009 
00010 #include "all.h"
00011 
00012 /* TODO: refactor the whole parsing thing */
00013 
00014 static char *last_key;
00015 static Con *json_node;
00016 static Con *to_focus;
00017 static bool parsing_swallows;
00018 static bool parsing_rect;
00019 static bool parsing_window_rect;
00020 static bool parsing_geometry;
00021 struct Match *current_swallow;
00022 
00023 static int json_start_map(void *ctx) {
00024     LOG("start of map, last_key = %s\n", last_key);
00025     if (parsing_swallows) {
00026         LOG("creating new swallow\n");
00027         current_swallow = smalloc(sizeof(Match));
00028         match_init(current_swallow);
00029         TAILQ_INSERT_TAIL(&(json_node->swallow_head), current_swallow, matches);
00030     } else {
00031         if (!parsing_rect && !parsing_window_rect && !parsing_geometry) {
00032             if (last_key && strcasecmp(last_key, "floating_nodes") == 0) {
00033                 DLOG("New floating_node\n");
00034                 Con *ws = con_get_workspace(json_node);
00035                 json_node = con_new(NULL, NULL);
00036                 json_node->parent = ws;
00037                 DLOG("Parent is workspace = %p\n", ws);
00038             } else {
00039                 Con *parent = json_node;
00040                 json_node = con_new(NULL, NULL);
00041                 json_node->parent = parent;
00042             }
00043         }
00044     }
00045     return 1;
00046 }
00047 
00048 static int json_end_map(void *ctx) {
00049     LOG("end of map\n");
00050     if (!parsing_swallows && !parsing_rect && !parsing_window_rect && !parsing_geometry) {
00051         LOG("attaching\n");
00052         con_attach(json_node, json_node->parent, true);
00053         json_node = json_node->parent;
00054     }
00055     if (parsing_rect)
00056         parsing_rect = false;
00057     if (parsing_window_rect)
00058         parsing_window_rect = false;
00059     if (parsing_geometry)
00060         parsing_geometry = false;
00061     return 1;
00062 }
00063 
00064 static int json_end_array(void *ctx) {
00065     LOG("end of array\n");
00066     parsing_swallows = false;
00067     return 1;
00068 }
00069 
00070 #if YAJL_MAJOR < 2
00071 static int json_key(void *ctx, const unsigned char *val, unsigned int len) {
00072 #else
00073 static int json_key(void *ctx, const unsigned char *val, size_t len) {
00074 #endif
00075     LOG("key: %.*s\n", (int)len, val);
00076     FREE(last_key);
00077     last_key = scalloc((len+1) * sizeof(char));
00078     memcpy(last_key, val, len);
00079     if (strcasecmp(last_key, "swallows") == 0) {
00080         parsing_swallows = true;
00081     }
00082     if (strcasecmp(last_key, "rect") == 0)
00083         parsing_rect = true;
00084     if (strcasecmp(last_key, "window_rect") == 0)
00085         parsing_window_rect = true;
00086     if (strcasecmp(last_key, "geometry") == 0)
00087         parsing_geometry = true;
00088     return 1;
00089 }
00090 
00091 #if YAJL_MAJOR >= 2
00092 static int json_string(void *ctx, const unsigned char *val, size_t len) {
00093 #else
00094 static int json_string(void *ctx, const unsigned char *val, unsigned int len) {
00095 #endif
00096     LOG("string: %.*s for key %s\n", len, val, last_key);
00097     if (parsing_swallows) {
00098         /* TODO: the other swallowing keys */
00099         if (strcasecmp(last_key, "class") == 0) {
00100             current_swallow->class = scalloc((len+1) * sizeof(char));
00101             memcpy(current_swallow->class, val, len);
00102         }
00103         LOG("unhandled yet: swallow\n");
00104     } else {
00105         if (strcasecmp(last_key, "name") == 0) {
00106             json_node->name = scalloc((len+1) * sizeof(char));
00107             memcpy(json_node->name, val, len);
00108         } else if (strcasecmp(last_key, "sticky_group") == 0) {
00109             json_node->sticky_group = scalloc((len+1) * sizeof(char));
00110             memcpy(json_node->sticky_group, val, len);
00111             LOG("sticky_group of this container is %s\n", json_node->sticky_group);
00112         } else if (strcasecmp(last_key, "orientation") == 0) {
00113             char *buf = NULL;
00114             asprintf(&buf, "%.*s", (int)len, val);
00115             if (strcasecmp(buf, "none") == 0)
00116                 json_node->orientation = NO_ORIENTATION;
00117             else if (strcasecmp(buf, "horizontal") == 0)
00118                 json_node->orientation = HORIZ;
00119             else if (strcasecmp(buf, "vertical") == 0)
00120                 json_node->orientation = VERT;
00121             else LOG("Unhandled orientation: %s\n", buf);
00122             free(buf);
00123         } else if (strcasecmp(last_key, "border") == 0) {
00124             char *buf = NULL;
00125             asprintf(&buf, "%.*s", (int)len, val);
00126             if (strcasecmp(buf, "none") == 0)
00127                 json_node->border_style = BS_NONE;
00128             else if (strcasecmp(buf, "1pixel") == 0)
00129                 json_node->border_style = BS_1PIXEL;
00130             else if (strcasecmp(buf, "normal") == 0)
00131                 json_node->border_style = BS_NORMAL;
00132             else LOG("Unhandled \"border\": %s\n", buf);
00133             free(buf);
00134         } else if (strcasecmp(last_key, "layout") == 0) {
00135             char *buf = NULL;
00136             asprintf(&buf, "%.*s", (int)len, val);
00137             if (strcasecmp(buf, "default") == 0)
00138                 json_node->layout = L_DEFAULT;
00139             else if (strcasecmp(buf, "stacked") == 0)
00140                 json_node->layout = L_STACKED;
00141             else if (strcasecmp(buf, "tabbed") == 0)
00142                 json_node->layout = L_TABBED;
00143             else if (strcasecmp(buf, "dockarea") == 0)
00144                 json_node->layout = L_DOCKAREA;
00145             else if (strcasecmp(buf, "output") == 0)
00146                 json_node->layout = L_OUTPUT;
00147             else LOG("Unhandled \"layout\": %s\n", buf);
00148             free(buf);
00149         }
00150     }
00151     return 1;
00152 }
00153 
00154 #if YAJL_MAJOR >= 2
00155 static int json_int(void *ctx, long long val) {
00156 #else
00157 static int json_int(void *ctx, long val) {
00158 #endif
00159     LOG("int %d for key %s\n", val, last_key);
00160     // TODO: remove this after the next preview release
00161     if (strcasecmp(last_key, "layout") == 0) {
00162         json_node->layout = val;
00163     }
00164     if (strcasecmp(last_key, "type") == 0) {
00165         json_node->type = val;
00166     }
00167     if (strcasecmp(last_key, "fullscreen_mode") == 0) {
00168         json_node->fullscreen_mode = val;
00169     }
00170     if (strcasecmp(last_key, "focused") == 0 && val == 1) {
00171         to_focus = json_node;
00172     }
00173 
00174     if (strcasecmp(last_key, "num") == 0)
00175         json_node->num = val;
00176 
00177     if (parsing_rect || parsing_window_rect || parsing_geometry) {
00178         Rect *r;
00179         if (parsing_rect)
00180             r = &(json_node->rect);
00181         else if (parsing_window_rect)
00182             r = &(json_node->window_rect);
00183         else r = &(json_node->geometry);
00184         if (strcasecmp(last_key, "x") == 0)
00185             r->x = val;
00186         else if (strcasecmp(last_key, "y") == 0)
00187             r->y = val;
00188         else if (strcasecmp(last_key, "width") == 0)
00189             r->width = val;
00190         else if (strcasecmp(last_key, "height") == 0)
00191             r->height = val;
00192         else printf("WARNING: unknown key %s in rect\n", last_key);
00193         printf("rect now: (%d, %d, %d, %d)\n",
00194                 r->x, r->y, r->width, r->height);
00195     }
00196     if (parsing_swallows) {
00197         if (strcasecmp(last_key, "id") == 0) {
00198             current_swallow->id = val;
00199         }
00200         if (strcasecmp(last_key, "dock") == 0) {
00201             current_swallow->dock = val;
00202         }
00203         if (strcasecmp(last_key, "insert_where") == 0) {
00204             current_swallow->insert_where = val;
00205         }
00206     }
00207 
00208     return 1;
00209 }
00210 
00211 static int json_double(void *ctx, double val) {
00212     LOG("double %f for key %s\n", val, last_key);
00213     if (strcasecmp(last_key, "percent") == 0) {
00214         json_node->percent = val;
00215     }
00216     return 1;
00217 }
00218 
00219 void tree_append_json(const char *filename) {
00220     /* TODO: percent of other windows are not correctly fixed at the moment */
00221     FILE *f;
00222     if ((f = fopen(filename, "r")) == NULL) {
00223         LOG("Cannot open file\n");
00224         return;
00225     }
00226     char *buf = malloc(65535); /* TODO */
00227     int n = fread(buf, 1, 65535, f);
00228     LOG("read %d bytes\n", n);
00229     yajl_gen g;
00230     yajl_handle hand;
00231     yajl_callbacks callbacks;
00232     memset(&callbacks, '\0', sizeof(yajl_callbacks));
00233     callbacks.yajl_start_map = json_start_map;
00234     callbacks.yajl_end_map = json_end_map;
00235     callbacks.yajl_end_array = json_end_array;
00236     callbacks.yajl_string = json_string;
00237     callbacks.yajl_map_key = json_key;
00238     callbacks.yajl_integer = json_int;
00239     callbacks.yajl_double = json_double;
00240 #if YAJL_MAJOR >= 2
00241     g = yajl_gen_alloc(NULL);
00242     hand = yajl_alloc(&callbacks, NULL, (void*)g);
00243 #else
00244     g = yajl_gen_alloc(NULL, NULL);
00245     hand = yajl_alloc(&callbacks, NULL, NULL, (void*)g);
00246 #endif
00247     yajl_status stat;
00248     json_node = focused;
00249     to_focus = NULL;
00250     parsing_rect = false;
00251     parsing_window_rect = false;
00252     parsing_geometry = false;
00253     setlocale(LC_NUMERIC, "C");
00254     stat = yajl_parse(hand, (const unsigned char*)buf, n);
00255     if (stat != yajl_status_ok)
00256     {
00257         unsigned char * str = yajl_get_error(hand, 1, (const unsigned char*)buf, n);
00258         fprintf(stderr, "%s\n", (const char *) str);
00259         yajl_free_error(hand, str);
00260     }
00261 
00262     setlocale(LC_NUMERIC, "");
00263 #if YAJL_MAJOR >= 2
00264     yajl_complete_parse(hand);
00265 #else
00266     yajl_parse_complete(hand);
00267 #endif
00268 
00269     fclose(f);
00270     if (to_focus)
00271         con_focus(to_focus);
00272 }