jim

Simple, lightweight, modal, vim-inspired text editor
git clone git://git.janpasierb.com/jim.git
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find.c (2018B)

      1 #include"find.h"
      2 #include"jim.h"
      3 #include"output.h"
      4 #include"input.h"
      5 #include"row.h"
      6 #include"syntax.h"
      7 #include<string.h>
      8 #include<stdlib.h>
      9 
     10 void editorFindCallback(char* query, int key) {
     11     static int l_match = -1;
     12     static int direction = 1;
     13 
     14     static int saved_hl_line;
     15     static char* saved_hl = NULL;
     16 
     17     if(saved_hl) {
     18         memcpy(E.row[saved_hl_line].hl, saved_hl, E.row[saved_hl_line].rsize);
     19         free(saved_hl);
     20         saved_hl = NULL;
     21     }
     22 
     23     switch(key) {
     24         case ESCAPE:
     25         case RETURN:
     26             l_match = -1;
     27             direction = 1;
     28             return;
     29         case CTRL_KEY(NEXT):
     30             direction = 1;
     31             break;
     32         case CTRL_KEY(PREVIOUS):
     33             direction = -1;
     34             break;
     35         default:
     36             l_match = -1;
     37             direction = 1;
     38             break;
     39     }
     40 
     41     if(l_match == -1)
     42         direction = 1;
     43 
     44     int current = l_match;
     45     int i;
     46     for(i = 0; i < E.numrows; i++) {
     47         current += direction;
     48         if(current == -1)
     49             current = E.numrows - 1;
     50         else if(current == E.numrows)
     51             current = 0;
     52 
     53         erow* row = &E.row[current];
     54         char* match = strstr(row->render, query);
     55         if(match) {
     56             l_match = current;
     57             E.cy = current;
     58             E.cx = editorRowRxToCx(row, match - row->render);
     59             E.rowoff = E.numrows;
     60 
     61             saved_hl_line = current;
     62             saved_hl = malloc(row->rsize);
     63             memcpy(saved_hl, row->hl, row->rsize);
     64             memset(&row->hl[match - row->render], HL_MATCH, strlen(query));
     65             break;
     66         }
     67     }
     68 }
     69 
     70 void editorFind() {
     71     int s_cx = E.cx;
     72     int s_cy = E.cy;
     73     int s_coloff = E.coloff;
     74     int s_rowoff = E.rowoff;
     75 
     76     char* query = editorPrompt("/%s", editorFindCallback);
     77 
     78     if(query) {
     79         free(query);
     80     } else {
     81         E.cx = s_cx;
     82         E.cy = s_cy;
     83         E.coloff = s_coloff;
     84         E.rowoff = s_rowoff;
     85     }
     86 
     87     editorSetDefaultStatusMessage();
     88 }