vis-registers.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3
   4 #include "vis-core.h"
   5
   6 static Buffer *register_buffer(Register *reg, size_t slot) {
   7         Buffer *buf = array_get(&reg->values, slot);
   8         if (buf)
   9                 return buf;
  10         if (array_resize(&reg->values, slot) && (buf = array_get(&reg->values, slot)))
  11                 return buf;
  12         Buffer new;
  13         buffer_init(&new);
  14         if (!array_add(&reg->values, &new))
  15                 return NULL;
  16         size_t capacity = array_capacity(&reg->values);
  17         for (size_t i = array_length(&reg->values); i < capacity; i++) {
  18                 if (!array_add(&reg->values, &new))
  19                         return NULL;
  20         }
  21         return array_get(&reg->values, slot);
  22 }
  23
  24 static ssize_t read_buffer(void *context, char *data, size_t len) {
  25         buffer_append(context, data, len);
  26         return len;
  27 }
  28
  29 bool register_init(Register *reg) {
  30         Buffer buf;
  31         buffer_init(&buf);
  32         array_init_sized(&reg->values, sizeof(Buffer));
  33         return array_add(&reg->values, &buf);
  34 }
  35
  36 void register_release(Register *reg) {
  37         if (!reg)
  38                 return;
  39         size_t n = array_capacity(&reg->values);
  40         for (size_t i = 0; i < n; i++)
  41                 buffer_release(array_get(&reg->values, i));
  42         array_release(&reg->values);
  43 }
  44
  45 const char *register_slot_get(Vis *vis, Register *reg, size_t slot, size_t *len) {
  46         if (len)
  47                 *len = 0;
  48         switch (reg->type) {
  49         case REGISTER_NORMAL:
  50         {
  51                 Buffer *buf = array_get(&reg->values, slot);
  52                 if (!buf)
  53                         return NULL;
  54                 buffer_terminate(buf);
  55                 if (len)
  56                         *len = buffer_length0(buf);
  57                 return buffer_content0(buf);
  58         }
  59         case REGISTER_NUMBER:
  60         {
  61                 Buffer *buf = array_get(&reg->values, 0);
  62                 if (!buf)
  63                         return NULL;
  64                 buffer_printf(buf, "%zu", slot+1);
  65                 if (len)
  66                         *len = buffer_length0(buf);
  67                 return buffer_content0(buf);
  68         }
  69         case REGISTER_CLIPBOARD:
  70         {
  71                 Buffer buferr;
  72                 buffer_init(&buferr);
  73                 Buffer *buf = array_get(&reg->values, slot);
  74                 if (!buf)
  75                         return NULL;
  76                 buffer_clear(buf);
  77
  78                 int status = vis_pipe(vis, vis->win->file,
  79                         &(Filerange){ .start = 0, .end = 0 },
  80                         (const char*[]){ VIS_CLIPBOARD, "--paste", NULL },
  81                         buf, read_buffer, &buferr, read_buffer);
  82
  83                 if (status != 0)
  84                         vis_info_show(vis, "Command failed %s", buffer_content0(&buferr));
  85                 buffer_release(&buferr);
  86                 if (len)
  87                         *len = buffer_length0(buf);
  88                 return buffer_content0(buf);
  89         }
  90         case REGISTER_BLACKHOLE:
  91         default:
  92                 return NULL;
  93         }
  94 }
  95
  96 const char *register_get(Vis *vis, Register *reg, size_t *len) {
  97         return register_slot_get(vis, reg, 0, len);
  98 }
  99
 100 bool register_slot_put(Vis *vis, Register *reg, size_t slot, const char *data, size_t len) {
 101         if (reg->type != REGISTER_NORMAL)
 102                 return false;
 103         Buffer *buf = register_buffer(reg, slot);
 104         return buf && buffer_put(buf, data, len);
 105 }
 106
 107 bool register_put(Vis *vis, Register *reg, const char *data, size_t len) {
 108         return register_slot_put(vis, reg, 0, data, len) &&
 109                register_resize(reg, 1);
 110 }
 111
 112 bool register_put0(Vis *vis, Register *reg, const char *data) {
 113         return register_put(vis, reg, data, strlen(data)+1);
 114 }
 115
 116 static bool register_slot_append_range(Register *reg, size_t slot, Text *txt, Filerange *range) {
 117         switch (reg->type) {
 118         case REGISTER_NORMAL:
 119         {
 120                 Buffer *buf = register_buffer(reg, slot);
 121                 if (!buf)
 122                         return false;
 123                 size_t len = text_range_size(range);
 124                 if (len == SIZE_MAX || !buffer_grow(buf, len+1))
 125                         return false;
 126                 if (buf->len > 0 && buf->data[buf->len-1] == '\0')
 127                         buf->len--;
 128                 buf->len += text_bytes_get(txt, range->start, len, buf->data + buf->len);
 129                 return buffer_append(buf, "\0", 1);
 130         }
 131         default:
 132                 return false;
 133         }
 134 }
 135
 136 bool register_slot_put_range(Vis *vis, Register *reg, size_t slot, Text *txt, Filerange *range) {
 137         if (reg->append)
 138                 return register_slot_append_range(reg, slot, txt, range);
 139
 140         switch (reg->type) {
 141         case REGISTER_NORMAL:
 142         {
 143                 Buffer *buf = register_buffer(reg, slot);
 144                 if (!buf)
 145                         return false;
 146                 size_t len = text_range_size(range);
 147                 if (len == SIZE_MAX || !buffer_reserve(buf, len+1))
 148                         return false;
 149                 buf->len = text_bytes_get(txt, range->start, len, buf->data);
 150                 return buffer_append(buf, "\0", 1);
 151         }
 152         case REGISTER_CLIPBOARD:
 153         {
 154                 Buffer buferr;
 155                 buffer_init(&buferr);
 156
 157                 int status = vis_pipe(vis, vis->win->file, range,
 158                         (const char*[]){ VIS_CLIPBOARD, "--copy", NULL },
 159                         NULL, NULL, &buferr, read_buffer);
 160
 161                 if (status != 0)
 162                         vis_info_show(vis, "Command failed %s", buffer_content0(&buferr));
 163                 buffer_release(&buferr);
 164                 return status == 0;
 165         }
 166         case REGISTER_BLACKHOLE:
 167                 return true;
 168         default:
 169                 return false;
 170         }
 171 }
 172
 173 bool register_put_range(Vis *vis, Register *reg, Text *txt, Filerange *range) {
 174         return register_slot_put_range(vis, reg, 0, txt, range) &&
 175                register_resize(reg, 1);
 176 }
 177
 178 size_t vis_register_count(Vis *vis, Register *reg) {
 179         if (reg->type == REGISTER_NUMBER)
 180                 return vis->win ? view_selections_count(vis->win->view) : 0;
 181         return array_length(&reg->values);
 182 }
 183
 184 bool register_resize(Register *reg, size_t count) {
 185         return array_truncate(&reg->values, count);
 186 }
 187
 188 enum VisRegister vis_register_from(Vis *vis, char reg) {
 189         switch (reg) {
 190         case '+': return VIS_REG_CLIPBOARD;
 191         case '@': return VIS_MACRO_LAST_RECORDED;
 192         }
 193
 194         if ('a' <= reg && reg <= 'z')
 195                 return VIS_REG_a + reg - 'a';
 196         if ('A' <= reg && reg <= 'Z')
 197                 return VIS_REG_A + reg - 'A';
 198         for (size_t i = 0; i < LENGTH(vis_registers); i++) {
 199                 if (vis_registers[i].name == reg)
 200                         return i;
 201         }
 202         return VIS_REG_INVALID;
 203 }
 204
 205 void vis_register(Vis *vis, enum VisRegister reg) {
 206         if (VIS_REG_A <= reg && reg <= VIS_REG_Z) {
 207                 vis->action.reg = &vis->registers[VIS_REG_a + reg - VIS_REG_A];
 208                 vis->action.reg->append = true;
 209         } else if (reg < LENGTH(vis->registers)) {
 210                 vis->action.reg = &vis->registers[reg];
 211                 vis->action.reg->append = false;
 212         }
 213 }
 214
 215 enum VisRegister vis_register_used(Vis *vis) {
 216         if (!vis->action.reg)
 217                 return VIS_REG_DEFAULT;
 218         return vis->action.reg - vis->registers;
 219 }
 220
 221 static Register *register_from(Vis *vis, enum VisRegister id) {
 222         if (VIS_REG_A <= id && id <= VIS_REG_Z)
 223                 id = VIS_REG_a + id - VIS_REG_A;
 224         if (id < LENGTH(vis->registers))
 225                 return &vis->registers[id];
 226         return NULL;
 227 }
 228
 229 bool vis_register_set(Vis *vis, enum VisRegister id, Array *data) {
 230         Register *reg = register_from(vis, id);
 231         if (!reg)
 232                 return false;
 233         size_t len = array_length(data);
 234         for (size_t i = 0; i < len; i++) {
 235                 Buffer *buf = register_buffer(reg, i);
 236                 if (!buf)
 237                         return false;
 238                 TextString *string = array_get(data, i);
 239                 if (!buffer_put(buf, string->data, string->len))
 240                         return false;
 241         }
 242         return register_resize(reg, len);
 243 }
 244
 245 Array vis_register_get(Vis *vis, enum VisRegister id) {
 246         Array data;
 247         array_init_sized(&data, sizeof(TextString));
 248         Register *reg = register_from(vis, id);
 249         if (reg) {
 250                 size_t len = array_length(&reg->values);
 251                 array_reserve(&data, len);
 252                 for (size_t i = 0; i < len; i++) {
 253                         Buffer *buf = array_get(&reg->values, i);
 254                         TextString string = {
 255                                 .data = buffer_content(buf),
 256                                 .len = buffer_length(buf),
 257                         };
 258                         array_add(&data, &string);
 259                 }
 260         }
 261         return data;
 262 }
 263
 264 const RegisterDef vis_registers[] = {
 265         [VIS_REG_DEFAULT]    = { '"', VIS_HELP("Unnamed register")                                 },
 266         [VIS_REG_ZERO]       = { '0', VIS_HELP("Yank register")                                    },
 267         [VIS_REG_1]          = { '1', VIS_HELP("1st sub-expression match")                         },
 268         [VIS_REG_2]          = { '2', VIS_HELP("2nd sub-expression match")                         },
 269         [VIS_REG_3]          = { '3', VIS_HELP("3rd sub-expression match")                         },
 270         [VIS_REG_4]          = { '4', VIS_HELP("4th sub-expression match")                         },
 271         [VIS_REG_5]          = { '5', VIS_HELP("5th sub-expression match")                         },
 272         [VIS_REG_6]          = { '6', VIS_HELP("6th sub-expression match")                         },
 273         [VIS_REG_7]          = { '7', VIS_HELP("7th sub-expression match")                         },
 274         [VIS_REG_8]          = { '8', VIS_HELP("8th sub-expression match")                         },
 275         [VIS_REG_9]          = { '9', VIS_HELP("9th sub-expression match")                         },
 276         [VIS_REG_AMPERSAND]  = { '&', VIS_HELP("Last regex match")                                 },
 277         [VIS_REG_BLACKHOLE]  = { '_', VIS_HELP("/dev/null register")                               },
 278         [VIS_REG_CLIPBOARD]  = { '*', VIS_HELP("System clipboard register, see vis-clipboard(1)")  },
 279         [VIS_REG_DOT]        = { '.', VIS_HELP("Last inserted text")                               },
 280         [VIS_REG_SEARCH]     = { '/', VIS_HELP("Last search pattern")                              },
 281         [VIS_REG_COMMAND]    = { ':', VIS_HELP("Last :-command")                                   },
 282         [VIS_REG_SHELL]      = { '!', VIS_HELP("Last shell command given to either <, >, |, or !") },
 283         [VIS_REG_NUMBER]     = { '#', VIS_HELP("Register number")                                  },
 284 };