/**************************************************************************** * libs/libc/stdio/lib_fputs.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include "libc.h" /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: fputs * * Description: * fputs() writes the string s to stream, without its trailing '\0'. * ****************************************************************************/ #if defined(CONFIG_ARCH_ROMGETC) int fputs(FAR const IPTR char *s, FAR FILE *stream) { int nput; int ret; char ch; /* Write the string. Loop until the null terminator is encountered */ for (nput = 0, ch = up_romgetc(s); ch; nput++, s++, ch = up_romgetc(s)) { /* Write the next character to the stream buffer */ ret = lib_fwrite(&ch, 1, stream); if (ret <= 0) { return EOF; } /* Flush the buffer if a newline was written to the buffer */ if (ch == '\n' && (stream->fs_flags & __FS_FLAG_LBF) != 0) { ret = lib_fflush(stream, true); if (ret < 0) { return EOF; } } } return nput; } #else int fputs(FAR const IPTR char *s, FAR FILE *stream) { int nput; /* If line buffering is enabled, then we will have to output one character * at a time, checking for a newline character each time. */ if ((stream->fs_flags & __FS_FLAG_LBF) != 0) { int ret; /* Write the string. Loop until the null terminator is encountered */ for (nput = 0; *s; nput++, s++) { /* Write the next character to the stream buffer */ ret = lib_fwrite(s, 1, stream); if (ret <= 0) { return EOF; } /* Flush the buffer if a newline was written to the buffer */ if (*s == '\n') { ret = lib_fflush(stream, true); if (ret < 0) { return EOF; } } } } /* We can write the whole string in one operation without line buffering */ else { int ntowrite; /* Get the length of the string. */ ntowrite = strlen(s); if (ntowrite == 0) { return 0; } /* Write the string */ nput = lib_fwrite(s, ntowrite, stream); if (nput < 0) { return EOF; } } return nput; } #endif