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[ncvisual] add logerror() throughout parameter checks

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nick black 2021-03-25 18:42:03 -04:00 committed by Nick Black
parent 6f4a9e089c
commit 57cb7004ff
1 changed files with 6 additions and 0 deletions
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6
src/lib/visual.c
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@ -558,14 +558,17 @@ ncplane* ncvisual_render(notcurses* nc, ncvisual* ncv, const struct ncvisual_opt
int begx = vopts ? vopts->begx : 0;
//fprintf(stderr, "blit %dx%d+%dx%d %p\n", begy, begx, leny, lenx, ncv->data);
if(begy < 0 || begx < 0 || lenx < -1 || leny < -1){
logerror(nc, "Invalid geometry for visual %d %d %d %d\n", begy, begx, leny, lenx);
return NULL;
}
//fprintf(stderr, "OUR DATA: %p rows/cols: %d/%d\n", ncv->data, ncv->rows, ncv->cols);
if(ncv->data == NULL){
logerror(nc, "No data in visual\n");
return NULL;
}
//fprintf(stderr, "blit %d/%d to %dx%d+%dx%d scaling: %d\n", ncv->rows, ncv->cols, begy, begx, leny, lenx, vopts ? vopts->scaling : 0);
if(begx >= ncv->cols || begy >= ncv->rows){
logerror(nc, "Visual too large %d > %d or %d > %d\n", begy, ncv->rows, begx, ncv->cols);
return NULL;
}
if(lenx == 0){ // 0 means "to the end"; use all available source material
@ -576,13 +579,16 @@ ncplane* ncvisual_render(notcurses* nc, ncvisual* ncv, const struct ncvisual_opt
}
//fprintf(stderr, "blit %d/%d to %dx%d+%dx%d scaling: %d\n", ncv->rows, ncv->cols, begy, begx, leny, lenx, vopts ? vopts->scaling : 0);
if(lenx <= 0 || leny <= 0){ // no need to draw zero-size object, exit
logerror(nc, "Zero-size object %d %d\n", leny, lenx);
return NULL;
}
if(begx + lenx > ncv->cols || begy + leny > ncv->rows){
logerror(nc, "Geometry too large %d > %d or %d > %d\n", begy + leny, ncv->rows, begx + lenx, ncv->cols);
return NULL;
}
const struct blitset* bset = rgba_blitter(nc, vopts);
if(!bset){
logerror(nc, "Couldn't get a blitter for %d\n", vopts ? vopts->blitter : NCBLIT_DEFAULT);
return NULL;
}
//fprintf(stderr, "beg/len: %d %d %d %d scale: %d/%d\n", begy, leny, begx, lenx, encoding_y_scale(bset), encoding_x_scale(bset));