/* This is an helper function for linenoiseEdit() and is called when the * user types the <tab> key in order to complete the string currently in the * input. * * The state of the editing is encapsulated into the pointed linenoiseState * structure as described in the structure definition. */ static int completeLine(struct linenoiseState *ls) { linenoiseCompletions lc = { 0, NULL }; int nread, nwritten; char c = 0; completionCallback(ls->buf,&lc); if (lc.len == 0) { linenoiseBeep(); } else { size_t stop = 0, i = 0; while(!stop) { /* Show completion or original buffer */ if (i < lc.len) { struct linenoiseState saved = *ls; ls->len = ls->pos = strlen(lc.cvec[i]); ls->buf = lc.cvec[i]; refreshLine(ls); ls->len = saved.len; ls->pos = saved.pos; ls->buf = saved.buf; } else { refreshLine(ls); } nread = read(ls->ifd,&c,1); if (nread <= 0) { freeCompletions(&lc); return -1; } switch(c) { case 9: /* tab */ i = (i+1) % (lc.len+1); if (i == lc.len) linenoiseBeep(); break; case 27: /* escape */ /* Re-show original buffer */ if (i < lc.len) refreshLine(ls); stop = 1; break; default: /* Update buffer and return */ if (i < lc.len) { nwritten = snprintf(ls->buf,ls->buflen,"%s",lc.cvec[i]); ls->len = ls->pos = nwritten; } stop = 1; break; } } } freeCompletions(&lc); return c; /* Return last read character */ }
static int completeLine(struct linenoiseState *ls) { linenoiseCompletions lc = { 0, NULL }; int nwritten = 0; char c = 0; completionCallback(ls->buf, &lc); if (lc.len == 0) { linenoiseBeep(); } else { size_t stop = 0, i = 0; while (!stop) { /* Show completion or original buffer */ if (i < lc.len) { struct linenoiseState saved = *ls; ls->len = ls->pos = strlen(lc.cvec[i]); ls->buf = lc.cvec[i]; refreshLine(ls); ls->len = saved.len; ls->pos = saved.pos; ls->buf = saved.buf; } else { refreshLine(ls); } c = serial.getc(); switch (c) { case TAB: /* tab */ i = (i + 1) % (lc.len + 1); if (i == lc.len) linenoiseBeep(); break; case ESC: /* escape */ /* Re-show original buffer */ if (i < lc.len) refreshLine(ls); stop = 1; break; default: /* Update buffer and return */ if (i < lc.len) { for (nwritten = 0; nwritten < ls->buflen; nwritten++) { ls->buf[nwritten] = lc.cvec[i][nwritten]; if (lc.cvec[i][nwritten] == '\0') break; } ls->len = ls->pos = nwritten; } stop = 1; break; } } } freeCompletions(&lc); return c; /* Return last read character */ }