diff options
Diffstat (limited to 'Build/source/libs/potrace/potrace-src/src/progress_bar.c')
| -rw-r--r-- | Build/source/libs/potrace/potrace-src/src/progress_bar.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/Build/source/libs/potrace/potrace-src/src/progress_bar.c b/Build/source/libs/potrace/potrace-src/src/progress_bar.c new file mode 100644 index 00000000000..acf75658a4f --- /dev/null +++ b/Build/source/libs/potrace/potrace-src/src/progress_bar.c @@ -0,0 +1,207 @@ +/* Copyright (C) 2001-2015 Peter Selinger. + This file is part of Potrace. It is free software and it is covered + by the GNU General Public License. See the file COPYING for details. */ + +/* functions to render a progress bar for main.c. We provide a + standard and a simplified progress bar. */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <math.h> +#include <stdlib.h> +#include <string.h> + +#include "potracelib.h" +#include "progress_bar.h" + +/* ---------------------------------------------------------------------- */ +/* vt100 progress bar */ + +#define COL0 "\033[G" /* reset cursor to column 0 */ + +struct vt100_progress_s { + char name[22]; /* filename for status bar */ + double dnext; /* threshold value for next tick */ +}; +typedef struct vt100_progress_s vt100_progress_t; + +/* print a progress bar using vt100 control characters. This is a + callback function that is potentially called often; thus, it has + been optimized for the typical case, which is when the progress bar + does not need updating. */ +static void vt100_progress(double d, void *data) { + vt100_progress_t *p = (vt100_progress_t *)data; + static char b[] = "========================================"; + int tick; /* number of visible tickmarks, 0..40 */ + int perc; /* visible percentage, 0..100 */ + + /* note: the 0.01 and 0.025 ensure that we always end on 40 + tickmarks and 100%, despite any rounding errors. The 0.995 + ensures that tick always increases when d >= p->dnext. */ + if (d >= p->dnext) { + tick = (int) floor(d*40+0.01); + perc = (int) floor(d*100+0.025); + fprintf(stderr, "%-21s |%-40s| %d%% "COL0"", p->name, b+40-tick, perc); + fflush(stderr); + p->dnext = (tick+0.995) / 40.0; + } +} + +/* Initialize progress bar. Return 0 on success or 1 on failure with + errno set. */ +static int init_vt100_progress(potrace_progress_t *prog, const char *filename, int count) { + vt100_progress_t *p; + const char *q, *s; + int len; + + p = (vt100_progress_t *) malloc(sizeof(vt100_progress_t)); + if (!p) { + return 1; + } + + /* initialize callback function's data */ + p->dnext = 0; + + if (count != 0) { + sprintf(p->name, " (p.%d):", count+1); + } else { + s = filename; + if ((q = strrchr(s, '/')) != NULL) { + s = q+1; + } + len = strlen(s); + strncpy(p->name, s, 21); + p->name[20] = 0; + if (len > 20) { + p->name[17] = '.'; + p->name[18] = '.'; + p->name[19] = '.'; + } + strcat(p->name, ":"); + } + + /* initialize progress parameters */ + prog->callback = &vt100_progress; + prog->data = (void *)p; + prog->min = 0.0; + prog->max = 1.0; + prog->epsilon = 0.0; + + /* draw first progress bar */ + vt100_progress(0.0, prog->data); + return 0; +} + +/* Finalize the progress bar. */ +static void term_vt100_progress(potrace_progress_t *prog) { + fprintf(stderr, "\n"); + fflush(stderr); + free(prog->data); + return; +} + +/* progress bar interface structure */ +static progress_bar_t progress_bar_vt100_struct = { + init_vt100_progress, + term_vt100_progress, +}; +progress_bar_t *progress_bar_vt100 = &progress_bar_vt100_struct; + +/* ---------------------------------------------------------------------- */ +/* another progress bar for dumb terminals */ + +struct simplified_progress_s { + int n; /* number of ticks displayed so far */ + double dnext; /* threshold value for next tick */ +}; +typedef struct simplified_progress_s simplified_progress_t; + +/* print a simplified progress bar, not using any special tty control + codes. Optimized for frequent calling. */ +static void simplified_progress(double d, void *data) { + simplified_progress_t *p = (simplified_progress_t *)data; + int tick; /* number of visible tickmarks, 0..40 */ + + /* note: the 0.01 and 0.025 ensure that we always end on 40 + tickmarks and 100%, despite any rounding errors. The 0.995 + ensures that tick always increases when d >= p->dnext. */ + if (d >= p->dnext) { + tick = (int) floor(d*40+0.01); + while (p->n < tick) { + fputc('=', stderr); + p->n++; + } + fflush(stderr); + p->dnext = (tick+0.995) / 40.0; + } +} + +/* Initialize parameters for simplified progress bar. Return 0 on + success or 1 on error with errno set. */ +static int init_simplified_progress(potrace_progress_t *prog, const char *filename, int count) { + simplified_progress_t *p; + const char *q, *s; + int len; + char buf[22]; + + p = (simplified_progress_t *) malloc(sizeof(simplified_progress_t)); + if (!p) { + return 1; + } + + /* initialize callback function's data */ + p->n = 0; + p->dnext = 0; + + if (count != 0) { + sprintf(buf, " (p.%d):", count+1); + } else { + s = filename; + if ((q = strrchr(s, '/')) != NULL) { + s = q+1; + } + len = strlen(s); + strncpy(buf, s, 21); + buf[20] = 0; + if (len > 20) { + buf[17] = '.'; + buf[18] = '.'; + buf[19] = '.'; + } + strcat(buf, ":"); + } + + fprintf(stderr, "%-21s |", buf); + + /* initialize progress parameters */ + prog->callback = &simplified_progress; + prog->data = (void *)p; + prog->min = 0.0; + prog->max = 1.0; + prog->epsilon = 0.0; + + /* draw first progress bar */ + simplified_progress(0.0, prog->data); + return 0; +} + +static void term_simplified_progress(potrace_progress_t *prog) { + simplified_progress_t *p = (simplified_progress_t *)prog->data; + + simplified_progress(1.0, (void *)p); + fprintf(stderr, "| 100%%\n"); + fflush(stderr); + free(p); + return; +} + +/* progress bar interface structure */ +static progress_bar_t progress_bar_simplified_struct = { + init_simplified_progress, + term_simplified_progress, +}; +progress_bar_t *progress_bar_simplified = &progress_bar_simplified_struct; + |