1 files changed, 297 insertions, 0 deletions

diff --git a/third_party/aom/common/args.c b/third_party/aom/common/args.c
new file mode 100644
index 0000000000..7131e24dee
--- /dev/null
+++ b/third_party/aom/common/args.c
@@ -0,0 +1,297 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "common/args.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+#include "aom/aom_integer.h"
+#include "aom_ports/msvc.h"
+
+#if defined(__GNUC__) && __GNUC__
+extern void die(const char *fmt, ...) __attribute__((noreturn));
+#else
+extern void die(const char *fmt, ...);
+#endif
+
+struct arg arg_init(char **argv) {
+  struct arg a;
+
+  a.argv = argv;
+  a.argv_step = 1;
+  a.name = NULL;
+  a.val = NULL;
+  a.def = NULL;
+  return a;
+}
+
+char *ignore_front_spaces(const char *str) {
+  while (str[0] == ' ' || str[0] == '\t') ++str;
+  return (char *)str;
+}
+
+void ignore_end_spaces(char *str) {
+  char *end = str + strlen(str);
+  while (end > str && (end[0] == ' ' || end[0] == '\t' || end[0] == '\n' ||
+                       end[0] == '\r' || end[0] == '\0'))
+    --end;
+  if (end >= str) end[1] = '\0';
+}
+
+int arg_cfg(int *argc, char ***argv, const char *file) {
+  char **argv_local = (char **)*argv;
+  char **argv_org = (char **)*argv;
+  char line[1024 * 10];
+  FILE *f = fopen(file, "r");
+  if (!f) return 1;
+
+  while (fgets(line, sizeof(line) - 1, f)) {
+    char *actual_line = ignore_front_spaces(line);
+    char *left, *right, *comment;
+    size_t length = strlen(actual_line);
+
+    if (length == 0 || actual_line[0] == '#') continue;
+    right = strchr(actual_line, ':');
+    if (right == NULL) continue;
+    right[0] = '\0';
+
+    left = ignore_front_spaces(actual_line);
+    right = ignore_front_spaces(right + 1);
+
+    comment = strchr(right, '#');
+    if (comment != NULL) comment[0] = '\0';
+
+    ignore_end_spaces(left);
+    ignore_end_spaces(right);
+
+    char **new_args = argv_dup(*argc, (const char **)argv_local);
+    char *new_line = (char *)malloc(sizeof(*new_line) * 128);
+
+    if (argv_local != argv_org) free(argv_local);
+
+    if (!strcmp(right, "ON"))
+      snprintf(new_line, sizeof(*new_line) * 128, "--%s", left);
+    else
+      snprintf(new_line, sizeof(*new_line) * 128, "--%s=%s", left, right);
+
+    new_args[(*argc) - 1] = new_args[(*argc) - 2];
+    new_args[(*argc) - 2] = new_line;
+    argv_local = new_args;
+    *argv = new_args;
+    (*argc)++;
+  }
+  fclose(f);
+  return 0;
+}
+
+int arg_match(struct arg *arg_, const struct arg_def *def, char **argv) {
+  struct arg arg;
+
+  if (!argv[0] || argv[0][0] != '-') return 0;
+
+  arg = arg_init(argv);
+
+  if (def->short_name && strlen(arg.argv[0]) == strlen(def->short_name) + 1 &&
+      !strcmp(arg.argv[0] + 1, def->short_name)) {
+    arg.name = arg.argv[0] + 1;
+    arg.val = def->has_val ? arg.argv[1] : NULL;
+    arg.argv_step = def->has_val ? 2 : 1;
+  } else if (def->long_name) {
+    const size_t name_len = strlen(def->long_name);
+
+    if (strlen(arg.argv[0]) >= name_len + 2 && arg.argv[0][1] == '-' &&
+        !strncmp(arg.argv[0] + 2, def->long_name, name_len) &&
+        (arg.argv[0][name_len + 2] == '=' ||
+         arg.argv[0][name_len + 2] == '\0')) {
+      arg.name = arg.argv[0] + 2;
+      arg.val = arg.name[name_len] == '=' ? arg.name + name_len + 1 : NULL;
+      arg.argv_step = 1;
+    }
+  }
+
+  if (arg.name && !arg.val && def->has_val)
+    die("Error: option %s requires argument.\n", arg.name);
+
+  if (arg.name && arg.val && !def->has_val)
+    die("Error: option %s requires no argument.\n", arg.name);
+
+  if (arg.name && (arg.val || !def->has_val)) {
+    arg.def = def;
+    *arg_ = arg;
+    return 1;
+  }
+
+  return 0;
+}
+
+const char *arg_next(struct arg *arg) {
+  if (arg->argv[0]) arg->argv += arg->argv_step;
+
+  return *arg->argv;
+}
+
+char **argv_dup(int argc, const char **argv) {
+  char **new_argv = malloc((argc + 1) * sizeof(*argv));
+
+  memcpy(new_argv, argv, argc * sizeof(*argv));
+  new_argv[argc] = NULL;
+  return new_argv;
+}
+
+void arg_show_usage(FILE *fp, const struct arg_def *const *defs) {
+  char option_text[40] = { 0 };
+
+  for (; *defs; defs++) {
+    const struct arg_def *def = *defs;
+    char *short_val = def->has_val ? " <arg>" : "";
+    char *long_val = def->has_val ? "=<arg>" : "";
+
+    if (def->short_name && def->long_name) {
+      char *comma = def->has_val ? "," : ",      ";
+
+      snprintf(option_text, 37, "-%s%s%s --%s%6s", def->short_name, short_val,
+               comma, def->long_name, long_val);
+    } else if (def->short_name)
+      snprintf(option_text, 37, "-%s%s", def->short_name, short_val);
+    else if (def->long_name)
+      snprintf(option_text, 37, "          --%s%s", def->long_name, long_val);
+
+    fprintf(fp, "  %-37s\t%s\n", option_text, def->desc);
+
+    if (def->enums) {
+      const struct arg_enum_list *listptr;
+
+      fprintf(fp, "  %-37s\t  ", "");
+
+      for (listptr = def->enums; listptr->name; listptr++)
+        fprintf(fp, "%s%s", listptr->name, listptr[1].name ? ", " : "\n");
+    }
+  }
+}
+
+unsigned int arg_parse_uint(const struct arg *arg) {
+  char *endptr;
+  const unsigned long rawval = strtoul(arg->val, &endptr, 10);  // NOLINT
+
+  if (arg->val[0] != '\0' && endptr[0] == '\0') {
+    if (rawval <= UINT_MAX) return (unsigned int)rawval;
+
+    die("Option %s: Value %lu out of range for unsigned int\n", arg->name,
+        rawval);
+  }
+
+  die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
+  return 0;
+}
+
+int arg_parse_int(const struct arg *arg) {
+  char *endptr;
+  const long rawval = strtol(arg->val, &endptr, 10);  // NOLINT
+
+  if (arg->val[0] != '\0' && endptr[0] == '\0') {
+    if (rawval >= INT_MIN && rawval <= INT_MAX) return (int)rawval;
+
+    die("Option %s: Value %ld out of range for signed int\n", arg->name,
+        rawval);
+  }
+
+  die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
+  return 0;
+}
+
+struct aom_rational {
+  int num; /**< fraction numerator */
+  int den; /**< fraction denominator */
+};
+struct aom_rational arg_parse_rational(const struct arg *arg) {
+  long int rawval;
+  char *endptr;
+  struct aom_rational rat;
+
+  /* parse numerator */
+  rawval = strtol(arg->val, &endptr, 10);
+
+  if (arg->val[0] != '\0' && endptr[0] == '/') {
+    if (rawval >= INT_MIN && rawval <= INT_MAX)
+      rat.num = (int)rawval;
+    else
+      die("Option %s: Value %ld out of range for signed int\n", arg->name,
+          rawval);
+  } else
+    die("Option %s: Expected / at '%c'\n", arg->name, *endptr);
+
+  /* parse denominator */
+  rawval = strtol(endptr + 1, &endptr, 10);
+
+  if (arg->val[0] != '\0' && endptr[0] == '\0') {
+    if (rawval >= INT_MIN && rawval <= INT_MAX)
+      rat.den = (int)rawval;
+    else
+      die("Option %s: Value %ld out of range for signed int\n", arg->name,
+          rawval);
+  } else
+    die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
+
+  return rat;
+}
+
+int arg_parse_enum(const struct arg *arg) {
+  const struct arg_enum_list *listptr;
+  long int rawval;
+  char *endptr;
+
+  /* First see if the value can be parsed as a raw value */
+  rawval = strtol(arg->val, &endptr, 10);
+  if (arg->val[0] != '\0' && endptr[0] == '\0') {
+    /* Got a raw value, make sure it's valid */
+    for (listptr = arg->def->enums; listptr->name; listptr++)
+      if (listptr->val == rawval) return (int)rawval;
+  }
+
+  /* Next see if it can be parsed as a string */
+  for (listptr = arg->def->enums; listptr->name; listptr++)
+    if (!strcmp(arg->val, listptr->name)) return listptr->val;
+
+  die("Option %s: Invalid value '%s'\n", arg->name, arg->val);
+  return 0;
+}
+
+int arg_parse_enum_or_int(const struct arg *arg) {
+  if (arg->def->enums) return arg_parse_enum(arg);
+  return arg_parse_int(arg);
+}
+
+// parse a comma separated list of at most n integers
+// return the number of elements in the list
+int arg_parse_list(const struct arg *arg, int *list, int n) {
+  const char *ptr = arg->val;
+  char *endptr;
+  int i = 0;
+
+  while (ptr[0] != '\0') {
+    int32_t rawval = (int32_t)strtol(ptr, &endptr, 10);
+    if (rawval < INT_MIN || rawval > INT_MAX) {
+      die("Option %s: Value %ld out of range for signed int\n", arg->name,
+          rawval);
+    } else if (i >= n) {
+      die("Option %s: List has more than %d entries\n", arg->name, n);
+    } else if (*endptr == ',') {
+      endptr++;
+    } else if (*endptr != '\0') {
+      die("Option %s: Bad list separator '%c'\n", arg->name, *endptr);
+    }
+    list[i++] = (int)rawval;
+    ptr = endptr;
+  }
+  return i;
+}