sxiv

simple X image viewer
git clone git://git.suckless.org/sxiv
Log | Files | Refs | LICENSE

commit e0e96977b348772cac67282a6591d6c58eeaa927
parent a3838c19841af4cc721121469d178236697df462
Author: Bert M√ľnnich <ber.t@posteo.de>
Date:   Wed, 28 Oct 2015 20:59:48 +0100

Removed overcautious parameter checks

Diffstat:
Makefile | 2+-
image.c | 55+++----------------------------------------------------
main.c | 11+++--------
thumbs.c | 38+-------------------------------------
util.c | 15+++------------
window.c | 37-------------------------------------
6 files changed, 11 insertions(+), 147 deletions(-)

diff --git a/Makefile b/Makefile @@ -1,4 +1,4 @@ -VERSION := git-20150819 +VERSION := git-20151028 PREFIX := /usr/local MANPREFIX := $(PREFIX)/share/man diff --git a/image.c b/image.c @@ -51,9 +51,6 @@ void img_init(img_t *img, win_t *win) zoom_min = zoom_levels[0] / 100.0; zoom_max = zoom_levels[ARRLEN(zoom_levels) - 1] / 100.0; - if (img == NULL || win == NULL) - return; - imlib_context_set_display(win->env.dpy); imlib_context_set_visual(win->env.vis); imlib_context_set_colormap(win->env.cmap); @@ -300,9 +297,6 @@ bool img_load(img_t *img, const fileinfo_t *file) { const char *fmt; - if (img == NULL || file == NULL || file->name == NULL || file->path == NULL) - return false; - if (access(file->path, R_OK) < 0 || (img->im = imlib_load_image(file->path)) == NULL) { @@ -336,9 +330,6 @@ void img_close(img_t *img, bool decache) { int i; - if (img == NULL) - return; - if (img->multi.cnt > 0) { for (i = 0; i < img->multi.cnt; i++) { imlib_context_set_image(img->multi.frames[i].im); @@ -362,9 +353,6 @@ void img_check_pan(img_t *img, bool moved) int ox, oy; float w, h; - if (img == NULL || img->im == NULL || img->win == NULL) - return; - win = img->win; w = img->w * img->zoom; h = img->h * img->zoom; @@ -392,8 +380,6 @@ bool img_fit(img_t *img) { float z, zmax, zw, zh; - if (img == NULL || img->im == NULL || img->win == NULL) - return false; if (img->scalemode == SCALE_ZOOM) return false; @@ -433,9 +419,6 @@ void img_render(img_t *img) Imlib_Image bg; unsigned long c; - if (img == NULL || img->im == NULL || img->win == NULL) - return; - win = img->win; img_fit(img); @@ -521,9 +504,6 @@ bool img_fit_win(img_t *img, scalemode_t sm) { float oz; - if (img == NULL || img->im == NULL || img->win == NULL) - return false; - oz = img->zoom; img->scalemode = sm; @@ -539,9 +519,6 @@ bool img_fit_win(img_t *img, scalemode_t sm) bool img_zoom(img_t *img, float z) { - if (img == NULL || img->im == NULL || img->win == NULL) - return false; - z = MAX(z, zoom_min); z = MIN(z, zoom_max); @@ -564,9 +541,6 @@ bool img_zoom_in(img_t *img) int i; float z; - if (img == NULL || img->im == NULL) - return false; - for (i = 1; i < ARRLEN(zoom_levels); i++) { z = zoom_levels[i] / 100.0; if (zoomdiff(z, img->zoom) > 0) @@ -580,9 +554,6 @@ bool img_zoom_out(img_t *img) int i; float z; - if (img == NULL || img->im == NULL) - return false; - for (i = ARRLEN(zoom_levels) - 2; i >= 0; i--) { z = zoom_levels[i] / 100.0; if (zoomdiff(z, img->zoom) < 0) @@ -595,9 +566,6 @@ bool img_move(img_t *img, float dx, float dy) { float ox, oy; - if (img == NULL || img->im == NULL) - return false; - ox = img->x; oy = img->y; @@ -622,9 +590,6 @@ bool img_pan(img_t *img, direction_t dir, int d) */ float x, y; - if (img == NULL || img->im == NULL || img->win == NULL) - return false; - if (d > 0) { x = y = MAX(1, (float) d * img->zoom); } else { @@ -649,9 +614,6 @@ bool img_pan_edge(img_t *img, direction_t dir) { int ox, oy; - if (img == NULL || img->im == NULL || img->win == NULL) - return false; - ox = img->x; oy = img->y; @@ -678,9 +640,6 @@ void img_rotate(img_t *img, degree_t d) { int i, ox, oy, tmp; - if (img == NULL || img->im == NULL || img->win == NULL) - return; - imlib_context_set_image(img->im); imlib_image_orientate(d); @@ -716,7 +675,7 @@ void img_flip(img_t *img, flipdir_t d) d = (d & (FLIP_HORIZONTAL | FLIP_VERTICAL)) - 1; - if (img == NULL || img->im == NULL || d < 0 || d >= ARRLEN(imlib_flip_op)) + if (d < 0 || d >= ARRLEN(imlib_flip_op)) return; imlib_context_set_image(img->im); @@ -733,9 +692,6 @@ void img_flip(img_t *img, flipdir_t d) void img_toggle_antialias(img_t *img) { - if (img == NULL || img->im == NULL) - return; - img->aa = !img->aa; imlib_context_set_image(img->im); imlib_context_set_anti_alias(img->aa); @@ -751,9 +707,6 @@ bool img_change_gamma(img_t *img, int d) int gamma; double range; - if (img == NULL) - return false; - if (d == 0) gamma = 0; else @@ -775,8 +728,6 @@ bool img_change_gamma(img_t *img, int d) bool img_frame_goto(img_t *img, int n) { - if (img == NULL || img->im == NULL) - return false; if (n < 0 || n >= img->multi.cnt || n == img->multi.sel) return false; @@ -794,7 +745,7 @@ bool img_frame_goto(img_t *img, int n) bool img_frame_navigate(img_t *img, int d) { - if (img == NULL|| img->im == NULL || img->multi.cnt == 0 || d == 0) + if (img->multi.cnt == 0 || d == 0) return false; d += img->multi.sel; @@ -808,7 +759,7 @@ bool img_frame_navigate(img_t *img, int d) bool img_frame_animate(img_t *img) { - if (img == NULL || img->im == NULL || img->multi.cnt == 0) + if (img->multi.cnt == 0) return false; if (img->multi.sel + 1 >= img->multi.cnt) diff --git a/main.c b/main.c @@ -117,7 +117,7 @@ void check_add_file(char *filename, bool given) { const char *bn; - if (filename == NULL || *filename == '\0') + if (*filename == '\0') return; if (access(filename, R_OK) < 0) { @@ -323,7 +323,8 @@ void load_image(int new) if (new < 0 || new >= filecnt) return; - win_set_cursor(&win, CURSOR_WATCH); + if (win.xwin != None) + win_set_cursor(&win, CURSOR_WATCH); reset_timeout(slideshow); if (new != current) @@ -590,9 +591,6 @@ void on_keypress(XKeyEvent *kev) char key; bool dirty = false; - if (kev == NULL) - return; - if (kev->state & ShiftMask) { kev->state &= ~ShiftMask; XLookupString(kev, &key, 1, &shksym, NULL); @@ -633,9 +631,6 @@ void on_buttonpress(XButtonEvent *bev) bool dirty = false; static Time firstclick; - if (bev == NULL) - return; - if (mode == MODE_IMAGE) { win_set_cursor(&win, CURSOR_ARROW); set_timeout(reset_cursor, TO_CURSOR_HIDE, true); diff --git a/thumbs.c b/thumbs.c @@ -43,7 +43,7 @@ char* tns_cache_filepath(const char *filepath) size_t len; char *cfile = NULL; - if (cache_dir == NULL || filepath == NULL || *filepath != '/') + if (*filepath != '/') return NULL; if (strncmp(filepath, cache_dir, strlen(cache_dir)) != 0) { @@ -61,8 +61,6 @@ Imlib_Image tns_cache_load(const char *filepath, bool *outdated) struct stat cstats, fstats; Imlib_Image im = NULL; - if (filepath == NULL) - return NULL; if (stat(filepath, &fstats) < 0) return NULL; @@ -85,8 +83,6 @@ void tns_cache_write(Imlib_Image im, const char *filepath, bool force) struct utimbuf times; Imlib_Load_Error err = 0; - if (im == NULL || filepath == NULL) - return; if (stat(filepath, &fstats) < 0) return; @@ -126,9 +122,6 @@ void tns_clean_cache(tns_t *tns) char *cfile, *filename, *tpos; r_dir_t dir; - if (cache_dir == NULL) - return; - if (r_opendir(&dir, cache_dir) < 0) { warn("could not open thumbnail cache directory: %s", cache_dir); return; @@ -162,9 +155,6 @@ void tns_init(tns_t *tns, fileinfo_t *files, const int *cnt, int *sel, int len; const char *homedir, *dsuffix = ""; - if (tns == NULL) - return; - if (cnt != NULL && *cnt > 0) { tns->thumbs = (thumb_t*) s_malloc(*cnt * sizeof(thumb_t)); memset(tns->thumbs, 0, *cnt * sizeof(thumb_t)); @@ -200,9 +190,6 @@ void tns_free(tns_t *tns) { int i; - if (tns == NULL) - return; - if (tns->thumbs != NULL) { for (i = 0; i < *tns->cnt; i++) { if (tns->thumbs[i].im != NULL) { @@ -253,8 +240,6 @@ bool tns_load(tns_t *tns, int n, bool force, bool cache_only) fileinfo_t *file; Imlib_Image im = NULL; - if (tns == NULL || tns->thumbs == NULL) - return false; if (n < 0 || n >= *tns->cnt) return false; file = &tns->files[n]; @@ -386,8 +371,6 @@ void tns_unload(tns_t *tns, int n) { thumb_t *t; - if (tns == NULL || tns->thumbs == NULL) - return; if (n < 0 || n >= *tns->cnt) return; @@ -434,8 +417,6 @@ void tns_render(tns_t *tns) win_t *win; int i, cnt, r, x, y; - if (tns == NULL || tns->thumbs == NULL || tns->win == NULL) - return; if (!tns->dirty) return; @@ -495,9 +476,6 @@ void tns_render(tns_t *tns) void tns_mark(tns_t *tns, int n, bool mark) { - if (tns == NULL || tns->thumbs == NULL || tns->win == NULL) - return; - if (n >= 0 && n < *tns->cnt && tns->thumbs[n].im != NULL) { win_t *win = tns->win; thumb_t *t = &tns->thumbs[n]; @@ -519,9 +497,6 @@ void tns_mark(tns_t *tns, int n, bool mark) void tns_highlight(tns_t *tns, int n, bool hl) { - if (tns == NULL || tns->thumbs == NULL || tns->win == NULL) - return; - if (n >= 0 && n < *tns->cnt && tns->thumbs[n].im != NULL) { win_t *win = tns->win; thumb_t *t = &tns->thumbs[n]; @@ -545,9 +520,6 @@ bool tns_move_selection(tns_t *tns, direction_t dir, int cnt) { int old, max; - if (tns == NULL || tns->thumbs == NULL) - return false; - old = *tns->sel; cnt = cnt > 1 ? cnt : 1; @@ -581,9 +553,6 @@ bool tns_scroll(tns_t *tns, direction_t dir, bool screen) { int d, max, old; - if (tns == NULL) - return false; - old = tns->first; d = tns->cols * (screen ? tns->rows : 1); @@ -607,9 +576,6 @@ bool tns_zoom(tns_t *tns, int d) { int i, oldzl; - if (tns == NULL || tns->thumbs == NULL) - return false; - oldzl = tns->zl; tns->zl += -(d < 0) + (d > 0); tns->zl = MAX(tns->zl, 0); @@ -631,8 +597,6 @@ int tns_translate(tns_t *tns, int x, int y) { int n; - if (tns == NULL || tns->thumbs == NULL) - return -1; if (x < tns->x || y < tns->y) return -1; diff --git a/util.c b/util.c @@ -103,9 +103,6 @@ ssize_t get_line(char **buf, size_t *n, FILE *stream) size_t len; char *s; - if (stream == NULL || feof(stream) || ferror(stream)) - return -1; - if (*buf == NULL || *n == 0) { *n = BUF_SIZE; *buf = (char*) s_malloc(*n); @@ -148,7 +145,7 @@ char* absolute_path(const char *filename) char *dir, *dirname = NULL, *path = NULL, *s; char *cwd = NULL, *twd = NULL; - if (filename == NULL || *filename == '\0' || *filename == '/') + if (*filename == '\0' || *filename == '/') return NULL; len = FNAME_LEN; @@ -211,7 +208,7 @@ end: int r_opendir(r_dir_t *rdir, const char *dirname) { - if (rdir == NULL || dirname == NULL || *dirname == '\0') + if (*dirname == '\0') return -1; if ((rdir->dir = opendir(dirname)) == NULL) { @@ -234,9 +231,6 @@ int r_closedir(r_dir_t *rdir) { int ret = 0; - if (rdir == NULL) - return -1; - if (rdir->stack != NULL) { while (rdir->stlen > 0) free(rdir->stack[--rdir->stlen]); @@ -264,9 +258,6 @@ char* r_readdir(r_dir_t *rdir) struct dirent *dentry; struct stat fstats; - if (rdir == NULL || rdir->dir == NULL || rdir->name == NULL) - return NULL; - while (true) { if (rdir->dir != NULL && (dentry = readdir(rdir->dir)) != NULL) { if (dentry->d_name[0] == '.') @@ -316,7 +307,7 @@ int r_mkdir(const char *path) struct stat stats; int err = 0; - if (path == NULL || *path == '\0') + if (*path == '\0') return -1; if (stat(path, &stats) == 0) diff --git a/window.c b/window.c @@ -94,8 +94,6 @@ unsigned long win_alloc_color(win_t *win, const char *name) { XColor col; - if (win == NULL) - return 0UL; if (XAllocNamedColor(win->env.dpy, DefaultColormap(win->env.dpy, win->env.scr), name, &col, &col) == 0) @@ -142,9 +140,6 @@ void win_init(win_t *win) { win_env_t *e; - if (win == NULL) - return; - memset(win, 0, sizeof(win_t)); e = &win->env; @@ -199,9 +194,6 @@ void win_open(win_t *win) XSizeHints sizehints; Bool fullscreen = options->fullscreen && fs_support; - if (win == NULL) - return; - e = &win->env; sizehints.flags = PWinGravity; @@ -317,9 +309,6 @@ void win_open(win_t *win) void win_close(win_t *win) { - if (win == NULL || win->xwin == None) - return; - XFreeCursor(win->env.dpy, carrow); XFreeCursor(win->env.dpy, cnone); XFreeCursor(win->env.dpy, chand); @@ -335,9 +324,6 @@ bool win_configure(win_t *win, XConfigureEvent *c) { bool changed; - if (win == NULL || c == NULL) - return false; - changed = win->w != c->width || win->h + win->bar.h != c->height; win->x = c->x; @@ -354,9 +340,6 @@ void win_toggle_fullscreen(win_t *win) XEvent ev; XClientMessageEvent *cm; - if (win == NULL || win->xwin == None) - return; - if (!fs_support) { if (!fs_warned) { warn("window manager does not support fullscreen"); @@ -383,9 +366,6 @@ void win_toggle_fullscreen(win_t *win) void win_toggle_bar(win_t *win) { - if (win == NULL || win->xwin == None) - return; - if (win->bar.h != 0) { win->h += win->bar.h; win->bar.h = 0; @@ -399,9 +379,6 @@ void win_clear(win_t *win) { win_env_t *e; - if (win == NULL || win->xwin == None) - return; - e = &win->env; if (win->w > win->buf.w || win->h + win->bar.h > win->buf.h) { @@ -423,8 +400,6 @@ void win_draw_bar(win_t *win) win_env_t *e; win_bar_t *l, *r; - if (win == NULL || win->xwin == None) - return; if ((l = &win->bar.l)->buf == NULL || (r = &win->bar.r)->buf == NULL) return; @@ -473,9 +448,6 @@ void win_draw_bar(win_t *win) void win_draw(win_t *win) { - if (win == NULL || win->xwin == None) - return; - if (win->bar.h > 0) win_draw_bar(win); @@ -489,9 +461,6 @@ void win_draw_rect(win_t *win, int x, int y, int w, int h, bool fill, int lw, { XGCValues gcval; - if (win == NULL || win->buf.pm == None) - return; - gcval.line_width = lw; gcval.foreground = col; XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval); @@ -517,9 +486,6 @@ int win_textwidth(const char *text, unsigned int len, bool with_padding) void win_set_title(win_t *win, const char *title) { - if (win == NULL || win->xwin == None) - return; - if (title == NULL) title = "sxiv"; @@ -536,9 +502,6 @@ void win_set_title(win_t *win, const char *title) void win_set_cursor(win_t *win, cursor_t cursor) { - if (win == NULL || win->xwin == None) - return; - switch (cursor) { case CURSOR_NONE: XDefineCursor(win->env.dpy, win->xwin, cnone);